155103999999 has 16 divisors (see below), whose sum is σ = 234435196800. Its totient is φ = 90425003616.

The previous prime is 155103999977. The next prime is 155104000003. The reversal of 155103999999 is 999999301551.

It is not a de Polignac number, because 155103999999 - 2⁹ = 155103999487 is a prime.

155103999999 is a modest number, since divided by 999999 gives 155103 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155103999499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104657829 + ... + 104659310.

It is an arithmetic number, because the mean of its divisors is an integer number (14652199800).

Almost surely, 2^155103999999 is an apocalyptic number.

155103999999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

155103999999 is a deficient number, since it is larger than the sum of its proper divisors (79331196801).

155103999999 is a wasteful number, since it uses less digits than its factorization.

155103999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209317174.

The product of its (nonzero) digits is 39858075, while the sum is 69.

The spelling of 155103999999 in words is "one hundred fifty-five billion, one hundred three million, nine hundred ninety-nine thousand, nine hundred ninety-nine".