155948157992 has 96 divisors (see below), whose sum is σ = 324238252800. Its totient is φ = 70262691840.

The previous prime is 155948157961. The next prime is 155948158019. The reversal of 155948157992 is 299751849551.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57353609 + ... + 57356327.

It is an arithmetic number, because the mean of its divisors is an integer number (3377481800).

Almost surely, 2^155948157992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155948157992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162119126400).

155948157992 is an abundant number, since it is smaller than the sum of its proper divisors (168290094808).

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

155948157992 is a wasteful number, since it uses less digits than its factorization.

155948157992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3232 counting only the distinct ones).

The product of its digits is 40824000, while the sum is 65.

The spelling of 155948157992 in words is "one hundred fifty-five billion, nine hundred forty-eight million, one hundred fifty-seven thousand, nine hundred ninety-two".