977878959267 has 32 divisors (see below), whose sum is σ = 1539077197824. Its totient is φ = 540443289600.

The previous prime is 977878959251. The next prime is 977878959283. The reversal of 977878959267 is 762959878779.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (977878959251) and next prime (977878959283).

It is not a de Polignac number, because 977878959267 - 2⁴ = 977878959251 is a prime.

It is a super-2 number, since 2×977878959267² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 977878959267.

It is not an unprimeable number, because it can be changed into a prime (977878969267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662167 + ... + 1547327.

It is an arithmetic number, because the mean of its divisors is an integer number (48096162432).

Almost surely, 2^977878959267 is an apocalyptic number.

977878959267 is a deficient number, since it is larger than the sum of its proper divisors (561198238557).

977878959267 is a wasteful number, since it uses less digits than its factorization.

977878959267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886899.

The product of its digits is 6721263360, while the sum is 84.

The spelling of 977878959267 in words is "nine hundred seventy-seven billion, eight hundred seventy-eight million, nine hundred fifty-nine thousand, two hundred sixty-seven".