155020054545 has 48 divisors (see below), whose sum is σ = 270869227200. Its totient is φ = 82010897280.

The previous prime is 155020054523. The next prime is 155020054547. The reversal of 155020054545 is 545450020551.

155020054545 is a `hidden beast` number, since 1 + 5 + 50 + 20 + 0 + 545 + 45 = 666.

It is not a de Polignac number, because 155020054545 - 2⁵ = 155020054513 is a prime.

It is a super-2 number, since 2×155020054545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155020054547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19207771 + ... + 19215839.

It is an arithmetic number, because the mean of its divisors is an integer number (5643108900).

Almost surely, 2^155020054545 is an apocalyptic number.

155020054545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155020054545 is a deficient number, since it is larger than the sum of its proper divisors (115849172655).

155020054545 is a wasteful number, since it uses less digits than its factorization.

155020054545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470 (or 11467 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 155020054545 in words is "one hundred fifty-five billion, twenty million, fifty-four thousand, five hundred forty-five".