155630831142 has 16 divisors (see below), whose sum is σ = 315907359552. Its totient is φ = 51102660840.

The previous prime is 155630831137. The next prime is 155630831173. The reversal of 155630831142 is 241138036551.

It is a self number, because there is not a number n which added to its sum of digits gives 155630831142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193570284 + ... + 193571087.

It is an arithmetic number, because the mean of its divisors is an integer number (19744209972).

Almost surely, 2^155630831142 is an apocalyptic number.

155630831142 is an abundant number, since it is smaller than the sum of its proper divisors (160276528410).

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

155630831142 is a wasteful number, since it uses less digits than its factorization.

155630831142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387141443.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 155630831142 its reverse (241138036551), we get a palindrome (396768867693).

The spelling of 155630831142 in words is "one hundred fifty-five billion, six hundred thirty million, eight hundred thirty-one thousand, one hundred forty-two".