16503407055 has 12 divisors (see below), whose sum is σ = 28605905640. Its totient is φ = 8801817072.

The previous prime is 16503407027. The next prime is 16503407071. The reversal of 16503407055 is 55070430561.

It is not a de Polignac number, because 16503407055 - 2⁵ = 16503407023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183371145 + ... + 183371234.

It is an arithmetic number, because the mean of its divisors is an integer number (2383825470).

Almost surely, 2^16503407055 is an apocalyptic number.

16503407055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16503407055 is a deficient number, since it is larger than the sum of its proper divisors (12102498585).

16503407055 is a wasteful number, since it uses less digits than its factorization.

16503407055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366742390 (or 366742387 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 16503407055 in words is "sixteen billion, five hundred three million, four hundred seven thousand, fifty-five".