66137119631 has 8 divisors (see below), whose sum is σ = 72548203728. Its totient is φ = 59792472000.

The previous prime is 66137119613. The next prime is 66137119649. The reversal of 66137119631 is 13691173166.

It is an interprime number because it is at equal distance from previous prime (66137119613) and next prime (66137119649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66137119631 - 2¹⁴ = 66137103247 is a prime.

It is a super-2 number, since 2×66137119631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66137119681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16607030 + ... + 16611011.

It is an arithmetic number, because the mean of its divisors is an integer number (9068525466).

Almost surely, 2^66137119631 is an apocalyptic number.

66137119631 is a deficient number, since it is larger than the sum of its proper divisors (6411084097).

66137119631 is a wasteful number, since it uses less digits than its factorization.

66137119631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33218233.

The product of its digits is 122472, while the sum is 44.

The spelling of 66137119631 in words is "sixty-six billion, one hundred thirty-seven million, one hundred nineteen thousand, six hundred thirty-one".