51010622121091 has 2 divisors, whose sum is σ = 51010622121092. Its totient is φ = 51010622121090.

The previous prime is 51010622121079. The next prime is 51010622121161. The reversal of 51010622121091 is 19012122601015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51010622121091 - 2⁷ = 51010622120963 is a prime.

It is not a weakly prime, because it can be changed into another prime (51010622125091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505311060545 + 25505311060546.

It is an arithmetic number, because the mean of its divisors is an integer number (25505311060546).

Almost surely, 2^{51010622121091} is an apocalyptic number.

51010622121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51010622121091 is an equidigital number, since it uses as much as digits as its factorization.

51010622121091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 31.

The spelling of 51010622121091 in words is "fifty-one trillion, ten billion, six hundred twenty-two million, one hundred twenty-one thousand, ninety-one".