72181937010 has 32 divisors (see below), whose sum is σ = 173293353792. Its totient is φ = 19242216000.

The previous prime is 72181936969. The next prime is 72181937017. The reversal of 72181937010 is 1073918127.

It is a self number, because there is not a number n which added to its sum of digits gives 72181937010.

It is not an unprimeable number, because it can be changed into a prime (72181937017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300241 + ... + 484260.

It is an arithmetic number, because the mean of its divisors is an integer number (5415417306).

Almost surely, 2^72181937010 is an apocalyptic number.

72181937010 is an abundant number, since it is smaller than the sum of its proper divisors (101111416782).

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

72181937010 is a wasteful number, since it uses less digits than its factorization.

72181937010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787578.

The product of its (nonzero) digits is 21168, while the sum is 39.

The spelling of 72181937010 in words is "seventy-two billion, one hundred eighty-one million, nine hundred thirty-seven thousand, ten".