123896609772 has 48 divisors (see below), whose sum is σ = 311352552672. Its totient is φ = 38119265280.

The previous prime is 123896609717. The next prime is 123896609791. The reversal of 123896609772 is 277906698321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526372 + ... + 3561332.

It is an arithmetic number, because the mean of its divisors is an integer number (6486511514).

Almost surely, 2^123896609772 is an apocalyptic number.

123896609772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123896609772 is an abundant number, since it is smaller than the sum of its proper divisors (187455942900).

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

123896609772 is a wasteful number, since it uses less digits than its factorization.

123896609772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57698 (or 57696 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 123896609772 in words is "one hundred twenty-three billion, eight hundred ninety-six million, six hundred nine thousand, seven hundred seventy-two".