155500117739 has 4 divisors (see below), whose sum is σ = 155506099200. Its totient is φ = 155494136280.

The previous prime is 155500117723. The next prime is 155500117757. The reversal of 155500117739 is 937711005551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937711005551 = 119429 ⋅7851619.

It is a cyclic number.

It is not a de Polignac number, because 155500117739 - 2⁴ = 155500117723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155500117739.

It is not an unprimeable number, because it can be changed into a prime (155500117769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951564 + ... + 3003785.

It is an arithmetic number, because the mean of its divisors is an integer number (38876524800).

Almost surely, 2^155500117739 is an apocalyptic number.

155500117739 is a deficient number, since it is larger than the sum of its proper divisors (5981461).

155500117739 is an equidigital number, since it uses as much as digits as its factorization.

155500117739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981460.

The product of its (nonzero) digits is 165375, while the sum is 44.

The spelling of 155500117739 in words is "one hundred fifty-five billion, five hundred million, one hundred seventeen thousand, seven hundred thirty-nine".