72311309630 has 64 divisors (see below), whose sum is σ = 150847944192. Its totient is φ = 24445998720.

The previous prime is 72311309569. The next prime is 72311309689. The reversal of 72311309630 is 3690311327.

It is a super-5 number, since 5×72311309630⁵ (a number of 55 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1414577 + ... + 1464803.

It is an arithmetic number, because the mean of its divisors is an integer number (2356999128).

Almost surely, 2^72311309630 is an apocalyptic number.

72311309630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72311309630 is an abundant number, since it is smaller than the sum of its proper divisors (78536634562).

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

72311309630 is a wasteful number, since it uses less digits than its factorization.

72311309630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50529.

The product of its (nonzero) digits is 20412, while the sum is 35.

The spelling of 72311309630 in words is "seventy-two billion, three hundred eleven million, three hundred nine thousand, six hundred thirty".