155098909040 has 40 divisors (see below), whose sum is σ = 361626573168. Its totient is φ = 61863802880.

The previous prime is 155098909037. The next prime is 155098909057. The reversal of 155098909040 is 40909890551.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 155098909040.

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, 2717846 + ... + 2774325.

Almost surely, 2^155098909040 is an apocalyptic number.

155098909040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155098909040 is an abundant number, since it is smaller than the sum of its proper divisors (206527664128).

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

155098909040 is a wasteful number, since it uses less digits than its factorization.

155098909040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492537 (or 5492531 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 50.

The spelling of 155098909040 in words is "one hundred fifty-five billion, ninety-eight million, nine hundred nine thousand, forty".