155949008500 has 48 divisors (see below), whose sum is σ = 340777683792. Its totient is φ = 62345712000.

The previous prime is 155949008443. The next prime is 155949008531. The reversal of 155949008500 is 5800949551.

It can be written as a sum of positive squares in 8 ways, for example, as 128659950864 + 27289057636 = 358692^2 + 165194^2 .

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, 846702 + ... + 1014298.

It is an arithmetic number, because the mean of its divisors is an integer number (7099535079).

Almost surely, 2^155949008500 is an apocalyptic number.

155949008500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155949008500 is an abundant number, since it is smaller than the sum of its proper divisors (184828675292).

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

155949008500 is a wasteful number, since it uses less digits than its factorization.

155949008500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169477 (or 169465 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 155949008500 in words is "one hundred fifty-five billion, nine hundred forty-nine million, eight thousand, five hundred".