51011151117 has 4 divisors (see below), whose sum is σ = 68014868160. Its totient is φ = 34007434076.

The previous prime is 51011151101. The next prime is 51011151173. The reversal of 51011151117 is 71115111015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51011151117 - 2⁴ = 51011151101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011153117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8501858517 + ... + 8501858522.

It is an arithmetic number, because the mean of its divisors is an integer number (17003717040).

Almost surely, 2^51011151117 is an apocalyptic number.

It is an amenable number.

51011151117 is a deficient number, since it is larger than the sum of its proper divisors (17003717043).

51011151117 is a wasteful number, since it uses less digits than its factorization.

51011151117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17003717042.

The product of its (nonzero) digits is 175, while the sum is 24.

The spelling of 51011151117 in words is "fifty-one billion, eleven million, one hundred fifty-one thousand, one hundred seventeen".