123299040795840 has 1344 divisors, whose sum is σ = 536059237109760. Its totient is φ = 25318543196160.

The previous prime is 123299040795823. The next prime is 123299040795841. The reversal of 123299040795840 is 48597040992321.

123299040795840 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 9 + 9 + 0 + 40 + 7 + 9 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a super-2 number, since 2×123299040795840² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (123299040795841) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2204851080 + ... + 2204907000.

It is an arithmetic number, because the mean of its divisors is an integer number (398853599040).

Almost surely, 2^{123299040795840} is an apocalyptic number.

123299040795840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123299040795840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268029618554880).

123299040795840 is an abundant number, since it is smaller than the sum of its proper divisors (412760196313920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123299040795840 is a wasteful number, since it uses less digits than its factorization.

123299040795840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56190 (or 56177 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 123299040795840 in words is "one hundred twenty-three trillion, two hundred ninety-nine billion, forty million, seven hundred ninety-five thousand, eight hundred forty".