51611655611627 has 2 divisors, whose sum is σ = 51611655611628. Its totient is φ = 51611655611626.

The previous prime is 51611655611573. The next prime is 51611655611653. The reversal of 51611655611627 is 72611655611615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51611655611627 - 2²⁴ = 51611638834411 is a prime.

It is not a weakly prime, because it can be changed into another prime (51611655611027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25805827805813 + 25805827805814.

It is an arithmetic number, because the mean of its divisors is an integer number (25805827805814).

Almost surely, 2^{51611655611627} is an apocalyptic number.

51611655611627 is a deficient number, since it is larger than the sum of its proper divisors (1).

51611655611627 is an equidigital number, since it uses as much as digits as its factorization.

51611655611627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 53.

The spelling of 51611655611627 in words is "fifty-one trillion, six hundred eleven billion, six hundred fifty-five million, six hundred eleven thousand, six hundred twenty-seven".