155730646044 has 36 divisors (see below), whose sum is σ = 394121735280. Its totient is φ = 51848333760.

The previous prime is 155730645937. The next prime is 155730646087. The reversal of 155730646044 is 440646037551.

155730646044 is a `hidden beast` number, since 1 + 5 + 5 + 7 + 30 + 6 + 4 + 604 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×155730646044² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2547777 + ... + 2608184.

It is an arithmetic number, because the mean of its divisors is an integer number (10947825980).

Almost surely, 2^155730646044 is an apocalyptic number.

It is an amenable number.

155730646044 is an abundant number, since it is smaller than the sum of its proper divisors (238391089236).

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

155730646044 is a wasteful number, since it uses less digits than its factorization.

155730646044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156810 (or 5156805 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 155730646044 in words is "one hundred fifty-five billion, seven hundred thirty million, six hundred forty-six thousand, forty-four".