155023553553 has 24 divisors (see below), whose sum is σ = 227405881248. Its totient is φ = 93867312000.

The previous prime is 155023553549. The next prime is 155023553557. The reversal of 155023553553 is 355355320551.

It is an interprime number because it is at equal distance from previous prime (155023553549) and next prime (155023553557).

It is not a de Polignac number, because 155023553553 - 2² = 155023553549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155023553557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200313 + ... + 591753.

It is an arithmetic number, because the mean of its divisors is an integer number (9475245052).

Almost surely, 2^155023553553 is an apocalyptic number.

It is an amenable number.

155023553553 is a deficient number, since it is larger than the sum of its proper divisors (72382327695).

155023553553 is a wasteful number, since it uses less digits than its factorization.

155023553553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392557 (or 392546 counting only the distinct ones).

The product of its (nonzero) digits is 843750, while the sum is 42.

The spelling of 155023553553 in words is "one hundred fifty-five billion, twenty-three million, five hundred fifty-three thousand, five hundred fifty-three".