77451292871 has 2 divisors, whose sum is σ = 77451292872. Its totient is φ = 77451292870.

The previous prime is 77451292837. The next prime is 77451292883. The reversal of 77451292871 is 17829215477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77451292871 - 2²² = 77447098567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77451294871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38725646435 + 38725646436.

It is an arithmetic number, because the mean of its divisors is an integer number (38725646436).

Almost surely, 2^77451292871 is an apocalyptic number.

77451292871 is a deficient number, since it is larger than the sum of its proper divisors (1).

77451292871 is an equidigital number, since it uses as much as digits as its factorization.

77451292871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 53.

The spelling of 77451292871 in words is "seventy-seven billion, four hundred fifty-one million, two hundred ninety-two thousand, eight hundred seventy-one".