155720556016513 has 8 divisors (see below), whose sum is σ = 163820573251200. Its totient is φ = 147802561641168.

The previous prime is 155720556016511. The next prime is 155720556016541. The reversal of 155720556016513 is 315610655027551.

It is a happy number.

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

It is not a de Polignac number, because 155720556016513 - 2¹ = 155720556016511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155720556016511) 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, 45505713081 + ... + 45505716502.

It is an arithmetic number, because the mean of its divisors is an integer number (20477571656400).

Almost surely, 2^{155720556016513} is an apocalyptic number.

It is an amenable number.

155720556016513 is a deficient number, since it is larger than the sum of its proper divisors (8100017234687).

155720556016513 is an equidigital number, since it uses as much as digits as its factorization.

155720556016513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91011429671.

The product of its (nonzero) digits is 4725000, while the sum is 52.

The spelling of 155720556016513 in words is "one hundred fifty-five trillion, seven hundred twenty billion, five hundred fifty-six million, sixteen thousand, five hundred thirteen".