155023455550 has 12 divisors (see below), whose sum is σ = 288343627416. Its totient is φ = 62009382200.

The previous prime is 155023455523. The next prime is 155023455553. The reversal of 155023455550 is 55554320551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155023455553) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1550234506 + ... + 1550234605.

It is an arithmetic number, because the mean of its divisors is an integer number (24028635618).

Almost surely, 2^155023455550 is an apocalyptic number.

155023455550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155023455550 is a deficient number, since it is larger than the sum of its proper divisors (133320171866).

155023455550 is a wasteful number, since it uses less digits than its factorization.

155023455550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100469123 (or 3100469118 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 40.

The spelling of 155023455550 in words is "one hundred fifty-five billion, twenty-three million, four hundred fifty-five thousand, five hundred fifty".