123190764840 has 896 divisors, whose sum is σ = 504510612480. Its totient is φ = 26649907200.

The previous prime is 123190764799. The next prime is 123190764859. The reversal of 123190764840 is 48467091321.

123190764840 is a `hidden beast` number, since 12 + 3 + 1 + 90 + 76 + 484 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 129265804 + ... + 129266756.

It is an arithmetic number, because the mean of its divisors is an integer number (563069880).

Almost surely, 2^123190764840 is an apocalyptic number.

123190764840 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 123190764840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252255306240).

123190764840 is an abundant number, since it is smaller than the sum of its proper divisors (381319847640).

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

123190764840 is a wasteful number, since it uses less digits than its factorization.

123190764840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 123190764840 in words is "one hundred twenty-three billion, one hundred ninety million, seven hundred sixty-four thousand, eight hundred forty".