72106315746 has 16 divisors (see below), whose sum is σ = 146038108800. Its totient is φ = 23731192368.

The previous prime is 72106315733. The next prime is 72106315753. The reversal of 72106315746 is 64751360127.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72106315698 and 72106315707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76061041 + ... + 76061988.

It is an arithmetic number, because the mean of its divisors is an integer number (9127381800).

Almost surely, 2^72106315746 is an apocalyptic number.

72106315746 is an abundant number, since it is smaller than the sum of its proper divisors (73931793054).

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

72106315746 is a wasteful number, since it uses less digits than its factorization.

72106315746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152123113.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 72106315746 in words is "seventy-two billion, one hundred six million, three hundred fifteen thousand, seven hundred forty-six".