83672405042 has 18 divisors (see below), whose sum is σ = 131217515037. Its totient is φ = 40012737336.

The previous prime is 83672405027. The next prime is 83672405051. The reversal of 83672405042 is 24050427638.

It can be written as a sum of positive squares in 2 ways, for example, as 70484409121 + 13187995921 = 265489^2 + 114839^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=204539.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9404348 + ... + 9413240.

Almost surely, 2^83672405042 is an apocalyptic number.

83672405042 is a deficient number, since it is larger than the sum of its proper divisors (47545109995).

83672405042 is an frugal number, since it uses more digits than its factorization.

83672405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17834 (or 8918 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 83672405042 in words is "eighty-three billion, six hundred seventy-two million, four hundred five thousand, forty-two".