155261267162780 has 48 divisors (see below), whose sum is σ = 329979116434464. Its totient is φ = 61355858484480.

The previous prime is 155261267162707. The next prime is 155261267162819. The reversal of 155261267162780 is 87261762162551.

155261267162780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155261267162780² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498529910 + ... + 498841250.

It is an arithmetic number, because the mean of its divisors is an integer number (6874564925718).

Almost surely, 2^{155261267162780} is an apocalyptic number.

155261267162780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155261267162780 is an abundant number, since it is smaller than the sum of its proper divisors (174717849271684).

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

155261267162780 is a wasteful number, since it uses less digits than its factorization.

155261267162780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611846 (or 611844 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 155261267162780 in words is "one hundred fifty-five trillion, two hundred sixty-one billion, two hundred sixty-seven million, one hundred sixty-two thousand, seven hundred eighty".