51611327707 has 2 divisors, whose sum is σ = 51611327708. Its totient is φ = 51611327706.

The previous prime is 51611327681. The next prime is 51611327737. The reversal of 51611327707 is 70772311615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51611327707 - 2²³ = 51602939099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51611327707.

It is not a weakly prime, because it can be changed into another prime (51611327737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25805663853 + 25805663854.

It is an arithmetic number, because the mean of its divisors is an integer number (25805663854).

Almost surely, 2^51611327707 is an apocalyptic number.

51611327707 is a deficient number, since it is larger than the sum of its proper divisors (1).

51611327707 is an equidigital number, since it uses as much as digits as its factorization.

51611327707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 40.

The spelling of 51611327707 in words is "fifty-one billion, six hundred eleven million, three hundred twenty-seven thousand, seven hundred seven".