778095791706651 has 32 divisors (see below), whose sum is σ = 1133089561264128. Its totient is φ = 471025793982240.

The previous prime is 778095791706593. The next prime is 778095791706731. The reversal of 778095791706651 is 156607197590877.

It is not a de Polignac number, because 778095791706651 - 2¹⁸ = 778095791444507 is a prime.

It is a super-2 number, since 2×778095791706651² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (778095791706851) 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, 1080318090 + ... + 1081038096.

It is an arithmetic number, because the mean of its divisors is an integer number (35409048789504).

Almost surely, 2^{778095791706651} is an apocalyptic number.

778095791706651 is a deficient number, since it is larger than the sum of its proper divisors (354993769557477).

778095791706651 is a wasteful number, since it uses less digits than its factorization.

778095791706651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757991.

The product of its (nonzero) digits is 1400263200, while the sum is 78.

The spelling of 778095791706651 in words is "seven hundred seventy-eight trillion, ninety-five billion, seven hundred ninety-one million, seven hundred six thousand, six hundred fifty-one".