51149462087 has 2 divisors, whose sum is σ = 51149462088. Its totient is φ = 51149462086.

The previous prime is 51149462033. The next prime is 51149462159. The reversal of 51149462087 is 78026494115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51149462087 - 2³⁰ = 50075720263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51149462027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25574731043 + 25574731044.

It is an arithmetic number, because the mean of its divisors is an integer number (25574731044).

Almost surely, 2^51149462087 is an apocalyptic number.

51149462087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51149462087 is an equidigital number, since it uses as much as digits as its factorization.

51149462087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 51149462087 in words is "fifty-one billion, one hundred forty-nine million, four hundred sixty-two thousand, eighty-seven".