155053439999 has 8 divisors (see below), whose sum is σ = 161840136192. Its totient is φ = 148270514040.

The previous prime is 155053439971. The next prime is 155053440023. The reversal of 155053439999 is 999934350551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155053439999 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 (155053439399) 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, 858347 + ... + 1023164.

It is an arithmetic number, because the mean of its divisors is an integer number (20230017024).

Almost surely, 2^155053439999 is an apocalyptic number.

155053439999 is a deficient number, since it is larger than the sum of its proper divisors (6786696193).

155053439999 is a wasteful number, since it uses less digits than its factorization.

155053439999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885117.

The product of its (nonzero) digits is 29524500, while the sum is 62.

The spelling of 155053439999 in words is "one hundred fifty-five billion, fifty-three million, four hundred thirty-nine thousand, nine hundred ninety-nine".