65631700119 has 4 divisors (see below), whose sum is σ = 87508933496. Its totient is φ = 43754466744.

The previous prime is 65631700111. The next prime is 65631700139. The reversal of 65631700119 is 91100713656.

It is a happy number.

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

It is not a de Polignac number, because 65631700119 - 2³ = 65631700111 is a prime.

It is a super-2 number, since 2×65631700119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65631700111) 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, 10938616684 + ... + 10938616689.

It is an arithmetic number, because the mean of its divisors is an integer number (21877233374).

Almost surely, 2^65631700119 is an apocalyptic number.

65631700119 is a deficient number, since it is larger than the sum of its proper divisors (21877233377).

65631700119 is a wasteful number, since it uses less digits than its factorization.

65631700119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877233376.

The product of its (nonzero) digits is 34020, while the sum is 39.

The spelling of 65631700119 in words is "sixty-five billion, six hundred thirty-one million, seven hundred thousand, one hundred nineteen".