77375601551 has 2 divisors, whose sum is σ = 77375601552. Its totient is φ = 77375601550.

The previous prime is 77375601533. The next prime is 77375601553. The reversal of 77375601551 is 15510657377.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77375601551 - 2⁶ = 77375601487 is a prime.

It is a super-2 number, since 2×77375601551² (a number of 23 digits) contains 22 as substring.

Together with 77375601553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77375601496 and 77375601505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77375601553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38687800775 + 38687800776.

It is an arithmetic number, because the mean of its divisors is an integer number (38687800776).

Almost surely, 2^77375601551 is an apocalyptic number.

77375601551 is a deficient number, since it is larger than the sum of its proper divisors (1).

77375601551 is an equidigital number, since it uses as much as digits as its factorization.

77375601551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 771750, while the sum is 47.

The spelling of 77375601551 in words is "seventy-seven billion, three hundred seventy-five million, six hundred one thousand, five hundred fifty-one".