36778457862 has 16 divisors (see below), whose sum is σ = 81729906480. Its totient is φ = 12259485936.

The previous prime is 36778457819. The next prime is 36778457899. The reversal of 36778457862 is 26875487763.

36778457862 is a `hidden beast` number, since 36 + 7 + 78 + 457 + 86 + 2 = 666.

It is a super-2 number, since 2×36778457862² (a number of 22 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 36778457862.

It is a congruent 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, 340541223 + ... + 340541330.

It is an arithmetic number, because the mean of its divisors is an integer number (5108119155).

Almost surely, 2^36778457862 is an apocalyptic number.

36778457862 is an abundant number, since it is smaller than the sum of its proper divisors (44951448618).

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

36778457862 is a wasteful number, since it uses less digits than its factorization.

36778457862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681082564 (or 681082558 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 36778457862 in words is "thirty-six billion, seven hundred seventy-eight million, four hundred fifty-seven thousand, eight hundred sixty-two".