155637145063 has 4 divisors (see below), whose sum is σ = 157385877120. Its totient is φ = 153888413008.

The previous prime is 155637145031. The next prime is 155637145073. The reversal of 155637145063 is 360541736551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360541736551 = 857 ⋅420702143.

It is a cyclic number.

It is not a de Polignac number, because 155637145063 - 2⁵ = 155637145031 is a prime.

It is a super-2 number, since 2×155637145063² (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 (155637145073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874365895 + ... + 874366072.

It is an arithmetic number, because the mean of its divisors is an integer number (39346469280).

Almost surely, 2^155637145063 is an apocalyptic number.

155637145063 is a deficient number, since it is larger than the sum of its proper divisors (1748732057).

155637145063 is an equidigital number, since it uses as much as digits as its factorization.

155637145063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748732056.

The product of its (nonzero) digits is 1134000, while the sum is 46.

It can be divided in two parts, 155637 and 145063, that added together give a triangular number (300700 = T₇₇₅).

The spelling of 155637145063 in words is "one hundred fifty-five billion, six hundred thirty-seven million, one hundred forty-five thousand, sixty-three".