101551051665 has 24 divisors (see below), whose sum is σ = 201167798208. Its totient is φ = 46423337760.

The previous prime is 101551051627. The next prime is 101551051739. The reversal of 101551051665 is 566150155101.

It is a happy number.

It is not a de Polignac number, because 101551051665 - 2¹¹ = 101551049617 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161191831 + ... + 161192460.

It is an arithmetic number, because the mean of its divisors is an integer number (8381991592).

Almost surely, 2^101551051665 is an apocalyptic number.

101551051665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101551051665 is a deficient number, since it is larger than the sum of its proper divisors (99616746543).

101551051665 is a wasteful number, since it uses less digits than its factorization.

101551051665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322384309 (or 322384306 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 101551051665 in words is "one hundred one billion, five hundred fifty-one million, fifty-one thousand, six hundred sixty-five".