65554045631 has 8 divisors (see below), whose sum is σ = 70252985184. Its totient is φ = 61009169760.

The previous prime is 65554045567. The next prime is 65554045639. The reversal of 65554045631 is 13654045556.

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

It is not a de Polignac number, because 65554045631 - 2⁶ = 65554045567 is a prime.

It is a super-2 number, since 2×65554045631² (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 (65554045639) 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, 38515040 + ... + 38516741.

It is an arithmetic number, because the mean of its divisors is an integer number (8781623148).

Almost surely, 2^65554045631 is an apocalyptic number.

65554045631 is a deficient number, since it is larger than the sum of its proper divisors (4698939553).

65554045631 is a wasteful number, since it uses less digits than its factorization.

65554045631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77031841.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 65554045631 in words is "sixty-five billion, five hundred fifty-four million, forty-five thousand, six hundred thirty-one".