155461357020 has 24 divisors (see below), whose sum is σ = 435291799824. Its totient is φ = 41456361856.

The previous prime is 155461356961. The next prime is 155461357033. The reversal of 155461357020 is 20753164551.

It is a self number, because there is not a number n which added to its sum of digits gives 155461357020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295511249 + ... + 1295511368.

It is an arithmetic number, because the mean of its divisors is an integer number (18137158326).

Almost surely, 2^155461357020 is an apocalyptic number.

155461357020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155461357020 is an abundant number, since it is smaller than the sum of its proper divisors (279830442804).

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

155461357020 is a wasteful number, since it uses less digits than its factorization.

155461357020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591022629 (or 2591022627 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 155461357020 in words is "one hundred fifty-five billion, four hundred sixty-one million, three hundred fifty-seven thousand, twenty".