72475021332 has 108 divisors (see below), whose sum is σ = 222376898016. Its totient is φ = 19806827040.

The previous prime is 72475021331. The next prime is 72475021337. The reversal of 72475021332 is 23312057427.

72475021332 is a `hidden beast` number, since 72 + 47 + 502 + 13 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72475021331) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 852594 + ... + 933737.

It is an arithmetic number, because the mean of its divisors is an integer number (2059045352).

Almost surely, 2^72475021332 is an apocalyptic number.

It is an amenable number.

72475021332 is an abundant number, since it is smaller than the sum of its proper divisors (149901876684).

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

72475021332 is a wasteful number, since it uses less digits than its factorization.

72475021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786378 (or 1786366 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

Adding to 72475021332 its reverse (23312057427), we get a palindrome (95787078759).

The spelling of 72475021332 in words is "seventy-two billion, four hundred seventy-five million, twenty-one thousand, three hundred thirty-two".