2566511313612 has 24 divisors (see below), whose sum is σ = 5988660179712. Its totient is φ = 855484659600.

The previous prime is 2566511313557. The next prime is 2566511313629. The reversal of 2566511313612 is 2163131156652.

It is a happy number.

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, 1824064 + ... + 2908647.

It is an arithmetic number, because the mean of its divisors is an integer number (249527507488).

Almost surely, 2^{2566511313612} is an apocalyptic number.

It is an amenable number.

2566511313612 is an abundant number, since it is smaller than the sum of its proper divisors (3422148866100).

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

2566511313612 is a wasteful number, since it uses less digits than its factorization.

2566511313612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777909 (or 4777907 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The spelling of 2566511313612 in words is "two trillion, five hundred sixty-six billion, five hundred eleven million, three hundred thirteen thousand, six hundred twelve".