307779079640 has 32 divisors (see below), whose sum is σ = 697955719680. Its totient is φ = 122142246912.

The previous prime is 307779079639. The next prime is 307779079649. The reversal of 307779079640 is 46970977703.

It is a self number, because there is not a number n which added to its sum of digits gives 307779079640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307779079649) 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, 30288137 + ... + 30298296.

It is an arithmetic number, because the mean of its divisors is an integer number (21811116240).

Almost surely, 2^307779079640 is an apocalyptic number.

It is an amenable number.

307779079640 is an abundant number, since it is smaller than the sum of its proper divisors (390176640040).

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

307779079640 is a wasteful number, since it uses less digits than its factorization.

307779079640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60586571 (or 60586567 counting only the distinct ones).

The product of its (nonzero) digits is 14002632, while the sum is 59.

The spelling of 307779079640 in words is "three hundred seven billion, seven hundred seventy-nine million, seventy-nine thousand, six hundred forty".