155880897649199 has 4 divisors (see below), whose sum is σ = 155882752155720. Its totient is φ = 155879043142680.

The previous prime is 155880897649187. The next prime is 155880897649259. The reversal of 155880897649199 is 991946798088551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155880897649199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155880897649159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927127172 + ... + 927295289.

It is an arithmetic number, because the mean of its divisors is an integer number (38970688038930).

Almost surely, 2^{155880897649199} is an apocalyptic number.

155880897649199 is a deficient number, since it is larger than the sum of its proper divisors (1854506521).

155880897649199 is an equidigital number, since it uses as much as digits as its factorization.

155880897649199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854506520.

The product of its (nonzero) digits is 14108774400, while the sum is 89.

The spelling of 155880897649199 in words is "one hundred fifty-five trillion, eight hundred eighty billion, eight hundred ninety-seven million, six hundred forty-nine thousand, one hundred ninety-nine".