72154131012 has 72 divisors (see below), whose sum is σ = 182836836000. Its totient is φ = 23992495488.

The previous prime is 72154130987. The next prime is 72154131031. The reversal of 72154131012 is 21013145127.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42467739 + ... + 42469437.

It is an arithmetic number, because the mean of its divisors is an integer number (2539400500).

Almost surely, 2^72154131012 is an apocalyptic number.

It is an amenable number.

72154131012 is an abundant number, since it is smaller than the sum of its proper divisors (110682704988).

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

72154131012 is a wasteful number, since it uses less digits than its factorization.

72154131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 72154131012 its reverse (21013145127), we get a palindrome (93167276139).

The spelling of 72154131012 in words is "seventy-two billion, one hundred fifty-four million, one hundred thirty-one thousand, twelve".