123398546745 has 16 divisors (see below), whose sum is σ = 207829131840. Its totient is φ = 62348739264.

The previous prime is 123398546743. The next prime is 123398546749. The reversal of 123398546745 is 547645893321.

It is not a de Polignac number, because 123398546745 - 2¹ = 123398546743 is a prime.

It is a super-3 number, since 3×123398546745³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (123398546743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216488394 + ... + 216488963.

It is an arithmetic number, because the mean of its divisors is an integer number (12989320740).

Almost surely, 2^123398546745 is an apocalyptic number.

123398546745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123398546745 is a deficient number, since it is larger than the sum of its proper divisors (84430585095).

123398546745 is a wasteful number, since it uses less digits than its factorization.

123398546745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432977384.

The product of its digits is 21772800, while the sum is 57.

The spelling of 123398546745 in words is "one hundred twenty-three billion, three hundred ninety-eight million, five hundred forty-six thousand, seven hundred forty-five".