51810401827 has 2 divisors, whose sum is σ = 51810401828. Its totient is φ = 51810401826.

The previous prime is 51810401813. The next prime is 51810401843. The reversal of 51810401827 is 72810401815.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51810401827 is a prime.

It is not a weakly prime, because it can be changed into another prime (51810411827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25905200913 + 25905200914.

It is an arithmetic number, because the mean of its divisors is an integer number (25905200914).

Almost surely, 2^51810401827 is an apocalyptic number.

51810401827 is a deficient number, since it is larger than the sum of its proper divisors (1).

51810401827 is an equidigital number, since it uses as much as digits as its factorization.

51810401827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 51810401827 in words is "fifty-one billion, eight hundred ten million, four hundred one thousand, eight hundred twenty-seven".