10656766578 has 16 divisors (see below), whose sum is σ = 21316180320. Its totient is φ = 3551814336.

The previous prime is 10656766573. The next prime is 10656766579. The reversal of 10656766578 is 87566765601.

It is a super-2 number, since 2×10656766578² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10656766573) 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, 55900 + ... + 156327.

It is an arithmetic number, because the mean of its divisors is an integer number (1332261270).

Almost surely, 2^10656766578 is an apocalyptic number.

10656766578 is an abundant number, since it is smaller than the sum of its proper divisors (10659413742).

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

10656766578 is a wasteful number, since it uses less digits than its factorization.

10656766578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220601.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 10656766578 in words is "ten billion, six hundred fifty-six million, seven hundred sixty-six thousand, five hundred seventy-eight".