155909490154 has 16 divisors (see below), whose sum is σ = 255189662496. Its totient is φ = 70849882800.

The previous prime is 155909490127. The next prime is 155909490161. The reversal of 155909490154 is 451094909551.

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, 814917 + ... + 987880.

It is an arithmetic number, because the mean of its divisors is an integer number (15949353906).

Almost surely, 2^155909490154 is an apocalyptic number.

155909490154 is a deficient number, since it is larger than the sum of its proper divisors (99280172342).

155909490154 is a wasteful number, since it uses less digits than its factorization.

155909490154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806741.

The product of its (nonzero) digits is 1458000, while the sum is 52.

The spelling of 155909490154 in words is "one hundred fifty-five billion, nine hundred nine million, four hundred ninety thousand, one hundred fifty-four".