72515409946 has 32 divisors (see below), whose sum is σ = 127033920000. Its totient is φ = 30401070336.

The previous prime is 72515409919. The next prime is 72515409947. The reversal of 72515409946 is 64990451527.

It is a junction number, because it is equal to n+sod(n) for n = 72515409893 and 72515409902.

It is not an unprimeable number, because it can be changed into a prime (72515409947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105055 + ... + 395053.

It is an arithmetic number, because the mean of its divisors is an integer number (3969810000).

Almost surely, 2^72515409946 is an apocalyptic number.

72515409946 is a deficient number, since it is larger than the sum of its proper divisors (54518510054).

72515409946 is a wasteful number, since it uses less digits than its factorization.

72515409946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290398.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 72515409946 in words is "seventy-two billion, five hundred fifteen million, four hundred nine thousand, nine hundred forty-six".