797634887391 has 12 divisors (see below), whose sum is σ = 1157170460680. Its totient is φ = 529434509040.

The previous prime is 797634887251. The next prime is 797634887447. The reversal of 797634887391 is 193788436797.

797634887391 is a `hidden beast` number, since 7 + 9 + 76 + 3 + 488 + 73 + 9 + 1 = 666.

It is not a de Polignac number, because 797634887391 - 2¹¹ = 797634885343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797634880391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193504705 + ... + 193508826.

Almost surely, 2^797634887391 is an apocalyptic number.

797634887391 is a deficient number, since it is larger than the sum of its proper divisors (359535573289).

797634887391 is a wasteful number, since it uses less digits than its factorization.

797634887391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387013766 (or 387013763 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 797634887391 in words is "seven hundred ninety-seven billion, six hundred thirty-four million, eight hundred eighty-seven thousand, three hundred ninety-one".