155101145254550 has 48 divisors (see below), whose sum is σ = 317116723391424. Its totient is φ = 55969878900000.

The previous prime is 155101145254541. The next prime is 155101145254553. The reversal of 155101145254550 is 55452541101551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155101145254553) 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, 1076271776 + ... + 1076415875.

It is an arithmetic number, because the mean of its divisors is an integer number (6606598403988).

Almost surely, 2^{155101145254550} is an apocalyptic number.

155101145254550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155101145254550 is an abundant number, since it is smaller than the sum of its proper divisors (162015578136874).

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

155101145254550 is a wasteful number, since it uses less digits than its factorization.

155101145254550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152687805 (or 2152687800 counting only the distinct ones).

The product of its (nonzero) digits is 500000, while the sum is 44.

The spelling of 155101145254550 in words is "one hundred fifty-five trillion, one hundred one billion, one hundred forty-five million, two hundred fifty-four thousand, five hundred fifty".