651165106055 has 4 divisors (see below), whose sum is σ = 781398127272. Its totient is φ = 520932084840.

The previous prime is 651165106049. The next prime is 651165106087. The reversal of 651165106055 is 550601561156.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 651165106055 - 2¹⁸ = 651164843911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65116510601 + ... + 65116510610.

It is an arithmetic number, because the mean of its divisors is an integer number (195349531818).

Almost surely, 2^651165106055 is an apocalyptic number.

651165106055 is a deficient number, since it is larger than the sum of its proper divisors (130233021217).

651165106055 is a wasteful number, since it uses less digits than its factorization.

651165106055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130233021216.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 651165106055 in words is "six hundred fifty-one billion, one hundred sixty-five million, one hundred six thousand, fifty-five".