155215010555 has 8 divisors (see below), whose sum is σ = 203190559344. Its totient is φ = 112883644000.

The previous prime is 155215010543. The next prime is 155215010557. The reversal of 155215010555 is 555010512551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155215010555 - 2⁸ = 155215010299 is a prime.

It is a super-2 number, since 2×155215010555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155215010557) 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, 1411045496 + ... + 1411045605.

It is an arithmetic number, because the mean of its divisors is an integer number (25398819918).

Almost surely, 2^155215010555 is an apocalyptic number.

155215010555 is a deficient number, since it is larger than the sum of its proper divisors (47975548789).

155215010555 is a wasteful number, since it uses less digits than its factorization.

155215010555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822091117.

The product of its (nonzero) digits is 31250, while the sum is 35.

The spelling of 155215010555 in words is "one hundred fifty-five billion, two hundred fifteen million, ten thousand, five hundred fifty-five".