155379899388363 has 32 divisors (see below), whose sum is σ = 227841860020992. Its totient is φ = 93605145782400.

The previous prime is 155379899388361. The next prime is 155379899388409. The reversal of 155379899388363 is 363883998973551.

155379899388363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155379899388363 - 2¹ = 155379899388361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155379899388363.

It is not an unprimeable number, because it can be changed into a prime (155379899388361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154268445 + ... + 155272382.

It is an arithmetic number, because the mean of its divisors is an integer number (7120058125656).

Almost surely, 2^{155379899388363} is an apocalyptic number.

155379899388363 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155379899388363 is a deficient number, since it is larger than the sum of its proper divisors (72461960632629).

155379899388363 is a wasteful number, since it uses less digits than its factorization.

155379899388363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309541115.

The product of its digits is 31744742400, while the sum is 87.

The spelling of 155379899388363 in words is "one hundred fifty-five trillion, three hundred seventy-nine billion, eight hundred ninety-nine million, three hundred eighty-eight thousand, three hundred sixty-three".