72630972530 has 16 divisors (see below), whose sum is σ = 131278226904. Its totient is φ = 28931838720.

The previous prime is 72630972461. The next prime is 72630972539. The reversal of 72630972530 is 3527903627.

It can be written as a sum of positive squares in 4 ways, for example, as 62698657609 + 9932314921 = 250397^2 + 99661^2 .

It is a super-2 number, since 2×72630972530² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72630972539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15066257 + ... + 15071076.

Almost surely, 2^72630972530 is an apocalyptic number.

72630972530 is a deficient number, since it is larger than the sum of its proper divisors (58647254374).

72630972530 is a wasteful number, since it uses less digits than its factorization.

72630972530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30137581.

The product of its (nonzero) digits is 476280, while the sum is 44.

It can be divided in two parts, 7263097 and 2530, that added together give a palindrome (7265627).

The spelling of 72630972530 in words is "seventy-two billion, six hundred thirty million, nine hundred seventy-two thousand, five hundred thirty".