155051131913 has 8 divisors (see below), whose sum is σ = 155198685960. Its totient is φ = 154903651840.

The previous prime is 155051131901. The next prime is 155051131951. The reversal of 155051131913 is 319131150551.

It can be written as a sum of positive squares in 4 ways, for example, as 7109356489 + 147941775424 = 84317^2 + 384632^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155051131913 - 2⁶ = 155051131849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155051191913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4738553 + ... + 4771161.

It is an arithmetic number, because the mean of its divisors is an integer number (19399835745).

Almost surely, 2^155051131913 is an apocalyptic number.

It is an amenable number.

155051131913 is a deficient number, since it is larger than the sum of its proper divisors (147554047).

155051131913 is a wasteful number, since it uses less digits than its factorization.

155051131913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36987.

The product of its (nonzero) digits is 10125, while the sum is 35.

The spelling of 155051131913 in words is "one hundred fifty-five billion, fifty-one million, one hundred thirty-one thousand, nine hundred thirteen".