77440667340 has 48 divisors (see below), whose sum is σ = 216911697408. Its totient is φ = 20643432384.

The previous prime is 77440667329. The next prime is 77440667363. The reversal of 77440667340 is 4376604477.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 77440667340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62052 + ... + 398411.

It is an arithmetic number, because the mean of its divisors is an integer number (4518993696).

Almost surely, 2^77440667340 is an apocalyptic number.

It is an amenable number.

77440667340 is an abundant number, since it is smaller than the sum of its proper divisors (139471030068).

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

77440667340 is a wasteful number, since it uses less digits than its factorization.

77440667340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463278 (or 463276 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 48.

The spelling of 77440667340 in words is "seventy-seven billion, four hundred forty million, six hundred sixty-seven thousand, three hundred forty".