7761678344 has 16 divisors (see below), whose sum is σ = 16632168000. Its totient is φ = 3326433552.

The previous prime is 7761678329. The next prime is 7761678377. The reversal of 7761678344 is 4438761677.

It is a super-4 number, since 4×7761678344⁴ (a number of 41 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69300644 + ... + 69300755.

It is an arithmetic number, because the mean of its divisors is an integer number (1039510500).

Almost surely, 2^7761678344 is an apocalyptic number.

It is an amenable number.

7761678344 is an abundant number, since it is smaller than the sum of its proper divisors (8870489656).

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

7761678344 is a wasteful number, since it uses less digits than its factorization.

7761678344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138601412 (or 138601408 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 53.

The square root of 7761678344 is about 88100.3878765582. The cubic root of 7761678344 is about 1979.9393192981.

The spelling of 7761678344 in words is "seven billion, seven hundred sixty-one million, six hundred seventy-eight thousand, three hundred forty-four".