155678242770 has 48 divisors (see below), whose sum is σ = 405649235160. Its totient is φ = 41423346432.

The previous prime is 155678242717. The next prime is 155678242807. The reversal of 155678242770 is 77242876551.

155678242770 is a `hidden beast` number, since 1 + 5 + 567 + 8 + 2 + 4 + 2 + 7 + 70 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 155542683321 + 135559449 = 394389^2 + 11643^2 .

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, 1851385 + ... + 1933644.

Almost surely, 2^155678242770 is an apocalyptic number.

155678242770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155678242770 is an abundant number, since it is smaller than the sum of its proper divisors (249970992390).

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

155678242770 is a wasteful number, since it uses less digits than its factorization.

155678242770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785499 (or 3785496 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 155678242770 in words is "one hundred fifty-five billion, six hundred seventy-eight million, two hundred forty-two thousand, seven hundred seventy".