155500605515 has 8 divisors (see below), whose sum is σ = 192620105088. Its totient is φ = 120387565440.

The previous prime is 155500605503. The next prime is 155500605527. The reversal of 155500605515 is 515506005551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155500605503) and next prime (155500605527).

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

It is not a de Polignac number, because 155500605515 - 2²⁰ = 155499556939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501614702 + ... + 501615011.

It is an arithmetic number, because the mean of its divisors is an integer number (24077513136).

Almost surely, 2^155500605515 is an apocalyptic number.

155500605515 is a deficient number, since it is larger than the sum of its proper divisors (37119499573).

155500605515 is a wasteful number, since it uses less digits than its factorization.

155500605515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003229749.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 155500605515 in words is "one hundred fifty-five billion, five hundred million, six hundred five thousand, five hundred fifteen".