72164741623746 has 64 divisors (see below), whose sum is σ = 152172900384768. Its totient is φ = 22770371308608.

The previous prime is 72164741623589. The next prime is 72164741623763. The reversal of 72164741623746 is 64732614746127.

It is a self number, because there is not a number n which added to its sum of digits gives 72164741623746.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1771951 + ... + 12143693.

It is an arithmetic number, because the mean of its divisors is an integer number (2377701568512).

Almost surely, 2^{72164741623746} is an apocalyptic number.

72164741623746 is an abundant number, since it is smaller than the sum of its proper divisors (80008158761022).

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

72164741623746 is a wasteful number, since it uses less digits than its factorization.

72164741623746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10372295.

The product of its digits is 56899584, while the sum is 60.

The spelling of 72164741623746 in words is "seventy-two trillion, one hundred sixty-four billion, seven hundred forty-one million, six hundred twenty-three thousand, seven hundred forty-six".