77086761551 has 2 divisors, whose sum is σ = 77086761552. Its totient is φ = 77086761550.

The previous prime is 77086761527. The next prime is 77086761559. The reversal of 77086761551 is 15516768077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77086761551 - 2¹⁴ = 77086745167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77086761493 and 77086761502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77086761559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38543380775 + 38543380776.

It is an arithmetic number, because the mean of its divisors is an integer number (38543380776).

Almost surely, 2^77086761551 is an apocalyptic number.

77086761551 is a deficient number, since it is larger than the sum of its proper divisors (1).

77086761551 is an equidigital number, since it uses as much as digits as its factorization.

77086761551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 53.

The spelling of 77086761551 in words is "seventy-seven billion, eighty-six million, seven hundred sixty-one thousand, five hundred fifty-one".