155904943103 has 64 divisors (see below), whose sum is σ = 203080335360. Its totient is φ = 116376393600.

The previous prime is 155904943069. The next prime is 155904943141. The reversal of 155904943103 is 301349409551.

It is a Cunningham number, because it is equal to 394848²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155904943103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155904943303) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35928908 + ... + 35933246.

It is an arithmetic number, because the mean of its divisors is an integer number (3173130240).

Almost surely, 2^155904943103 is an apocalyptic number.

155904943103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155904943103 is a deficient number, since it is larger than the sum of its proper divisors (47175392257).

155904943103 is a wasteful number, since it uses less digits than its factorization.

155904943103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 155904943103 in words is "one hundred fifty-five billion, nine hundred four million, nine hundred forty-three thousand, one hundred three".