158137962644 has 24 divisors (see below), whose sum is σ = 278007311400. Its totient is φ = 78707851776.

The previous prime is 158137962643. The next prime is 158137962659. The reversal of 158137962644 is 446269731851.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7454250244 + 150683712400 = 86338^2 + 388180^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 158137962644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158137962643) 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, 1094264 + ... + 1230320.

It is an arithmetic number, because the mean of its divisors is an integer number (11583637975).

Almost surely, 2^158137962644 is an apocalyptic number.

It is an amenable number.

158137962644 is a deficient number, since it is larger than the sum of its proper divisors (119869348756).

158137962644 is a wasteful number, since it uses less digits than its factorization.

158137962644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137387 (or 137385 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 158137962644 in words is "one hundred fifty-eight billion, one hundred thirty-seven million, nine hundred sixty-two thousand, six hundred forty-four".