155728291632 has 40 divisors (see below), whose sum is σ = 404054875440. Its totient is φ = 51682748160.

The previous prime is 155728291613. The next prime is 155728291633. The reversal of 155728291632 is 236192827551.

It is not an unprimeable number, because it can be changed into a prime (155728291633) 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, 7072719 + ... + 7094702.

It is an arithmetic number, because the mean of its divisors is an integer number (10101371886).

Almost surely, 2^155728291632 is an apocalyptic number.

155728291632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155728291632 is an abundant number, since it is smaller than the sum of its proper divisors (248326583808).

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

155728291632 is a wasteful number, since it uses less digits than its factorization.

155728291632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14167661 (or 14167655 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 155728291632 in words is "one hundred fifty-five billion, seven hundred twenty-eight million, two hundred ninety-one thousand, six hundred thirty-two".