155661200630 has 64 divisors (see below), whose sum is σ = 318647347200. Its totient is φ = 54274561920.

The previous prime is 155661200623. The next prime is 155661200641. The reversal of 155661200630 is 36002166551.

155661200630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155661200630² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 666851 + ... + 869489.

It is an arithmetic number, because the mean of its divisors is an integer number (4978864800).

Almost surely, 2^155661200630 is an apocalyptic number.

155661200630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155661200630 is an abundant number, since it is smaller than the sum of its proper divisors (162986146570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155661200630 is a wasteful number, since it uses less digits than its factorization.

155661200630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202989.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 155661200630 in words is "one hundred fifty-five billion, six hundred sixty-one million, two hundred thousand, six hundred thirty".