64154156631 has 8 divisors (see below), whose sum is σ = 85808715504. Its totient is φ = 42634517760.

The previous prime is 64154156597. The next prime is 64154156653. The reversal of 64154156631 is 13665145146.

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

It is not a de Polignac number, because 64154156631 - 2⁷ = 64154156503 is a prime.

It is a super-2 number, since 2×64154156631² (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 (64154156681) 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, 33728890 + ... + 33730791.

It is an arithmetic number, because the mean of its divisors is an integer number (10726089438).

Almost surely, 2^64154156631 is an apocalyptic number.

64154156631 is a deficient number, since it is larger than the sum of its proper divisors (21654558873).

64154156631 is a wasteful number, since it uses less digits than its factorization.

64154156631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67460001.

The product of its digits is 259200, while the sum is 42.

The spelling of 64154156631 in words is "sixty-four billion, one hundred fifty-four million, one hundred fifty-six thousand, six hundred thirty-one".