7745279979366 has 36 divisors (see below), whose sum is σ = 17403112624716. Its totient is φ = 2581739542080.

The previous prime is 7745279979347. The next prime is 7745279979443. The reversal of 7745279979366 is 6639799725477.

It is a happy number.

7745279979366 is a `hidden beast` number, since 7 + 7 + 452 + 7 + 99 + 79 + 3 + 6 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61290006 + ... + 61416246.

It is an arithmetic number, because the mean of its divisors is an integer number (483419795131).

Almost surely, 2^{7745279979366} is an apocalyptic number.

7745279979366 is an abundant number, since it is smaller than the sum of its proper divisors (9657832645350).

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

7745279979366 is an frugal number, since it uses more digits than its factorization.

7745279979366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252499 (or 126246 counting only the distinct ones).

The product of its digits is 7561421280, while the sum is 81.

The spelling of 7745279979366 in words is "seven trillion, seven hundred forty-five billion, two hundred seventy-nine million, nine hundred seventy-nine thousand, three hundred sixty-six".