309249320080 has 40 divisors (see below), whose sum is σ = 720004809600. Its totient is φ = 123527660928.

The previous prime is 309249320011. The next prime is 309249320147. The reversal of 309249320080 is 80023942903.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630670 + ... + 2745709.

It is an arithmetic number, because the mean of its divisors is an integer number (18000120240).

Almost surely, 2^309249320080 is an apocalyptic number.

It is an amenable number.

309249320080 is an abundant number, since it is smaller than the sum of its proper divisors (410755489520).

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

309249320080 is a wasteful number, since it uses less digits than its factorization.

309249320080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377111 (or 5377105 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 309249320080 in words is "three hundred nine billion, two hundred forty-nine million, three hundred twenty thousand, eighty".