155855701409 has 16 divisors (see below), whose sum is σ = 157658928000. Its totient is φ = 154063430784.

The previous prime is 155855701403. The next prime is 155855701447. The reversal of 155855701409 is 904107558551.

It is a cyclic number.

It is not a de Polignac number, because 155855701409 - 2¹² = 155855697313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155855701403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43938374 + ... + 43941920.

It is an arithmetic number, because the mean of its divisors is an integer number (9853683000).

Almost surely, 2^155855701409 is an apocalyptic number.

It is an amenable number.

155855701409 is a deficient number, since it is larger than the sum of its proper divisors (1803226591).

155855701409 is a wasteful number, since it uses less digits than its factorization.

155855701409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952.

The product of its (nonzero) digits is 1260000, while the sum is 50.

The spelling of 155855701409 in words is "one hundred fifty-five billion, eight hundred fifty-five million, seven hundred one thousand, four hundred nine".