72406524946 has 64 divisors (see below), whose sum is σ = 131773501440. Its totient is φ = 29148336000.

The previous prime is 72406524941. The next prime is 72406524973. The reversal of 72406524946 is 64942560427.

It is a self number, because there is not a number n which added to its sum of digits gives 72406524946.

It is not an unprimeable number, because it can be changed into a prime (72406524941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15769111 + ... + 15773701.

It is an arithmetic number, because the mean of its divisors is an integer number (2058960960).

Almost surely, 2^72406524946 is an apocalyptic number.

72406524946 is a deficient number, since it is larger than the sum of its proper divisors (59366976494).

72406524946 is a wasteful number, since it uses less digits than its factorization.

72406524946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 72406524946 in words is "seventy-two billion, four hundred six million, five hundred twenty-four thousand, nine hundred forty-six".