158386287631 has 16 divisors (see below), whose sum is σ = 187325056800. Its totient is φ = 132019528320.

The previous prime is 158386287623. The next prime is 158386287637. The reversal of 158386287631 is 136782683851.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 158386287631 - 2³ = 158386287623 is a prime.

It is a super-2 number, since 2×158386287631² (a number of 23 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 (158386287637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3695460 + ... + 3738073.

It is an arithmetic number, because the mean of its divisors is an integer number (11707816050).

Almost surely, 2^158386287631 is an apocalyptic number.

158386287631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158386287631 is a deficient number, since it is larger than the sum of its proper divisors (28938769169).

158386287631 is a wasteful number, since it uses less digits than its factorization.

158386287631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433706.

The product of its digits is 11612160, while the sum is 58.

The spelling of 158386287631 in words is "one hundred fifty-eight billion, three hundred eighty-six million, two hundred eighty-seven thousand, six hundred thirty-one".