155727799632 has 60 divisors (see below), whose sum is σ = 436499603904. Its totient is φ = 51828505920.

The previous prime is 155727799621. The next prime is 155727799637. The reversal of 155727799632 is 236997727551.

155727799632 is a `hidden beast` number, since 1 + 557 + 2 + 7 + 79 + 9 + 6 + 3 + 2 = 666.

It is a super-2 number, since 2×155727799632² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155727799632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155727799637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 748344 + ... + 933527.

Almost surely, 2^155727799632 is an apocalyptic number.

155727799632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155727799632 is an abundant number, since it is smaller than the sum of its proper divisors (280771804272).

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

155727799632 is a wasteful number, since it uses less digits than its factorization.

155727799632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682528 (or 1682519 counting only the distinct ones).

The product of its digits is 50009400, while the sum is 63.

The spelling of 155727799632 in words is "one hundred fifty-five billion, seven hundred twenty-seven million, seven hundred ninety-nine thousand, six hundred thirty-two".