72899392490 has 16 divisors (see below), whose sum is σ = 131274857952. Its totient is φ = 29147323344.

The previous prime is 72899392477. The next prime is 72899392499. The reversal of 72899392490 is 9429399827.

It is a super-2 number, since 2×72899392490² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72899392499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529564 + ... + 1576503.

It is an arithmetic number, because the mean of its divisors is an integer number (8204678622).

Almost surely, 2^72899392490 is an apocalyptic number.

72899392490 is a deficient number, since it is larger than the sum of its proper divisors (58375465462).

72899392490 is a wasteful number, since it uses less digits than its factorization.

72899392490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108421.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 72899392490 in words is "seventy-two billion, eight hundred ninety-nine million, three hundred ninety-two thousand, four hundred ninety".