16209902553 has 16 divisors (see below), whose sum is σ = 24078371520. Its totient is φ = 9631347264.

The previous prime is 16209902539. The next prime is 16209902567. The reversal of 16209902553 is 35520990261.

It is an interprime number because it is at equal distance from previous prime (16209902539) and next prime (16209902567).

It is not a de Polignac number, because 16209902553 - 2²⁰ = 16208853977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16209902053) 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, 7165051 + ... + 7167312.

It is an arithmetic number, because the mean of its divisors is an integer number (1504898220).

Almost surely, 2^16209902553 is an apocalyptic number.

16209902553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16209902553 is a deficient number, since it is larger than the sum of its proper divisors (7868468967).

16209902553 is a wasteful number, since it uses less digits than its factorization.

16209902553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14332408.

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 16209902553 in words is "sixteen billion, two hundred nine million, nine hundred two thousand, five hundred fifty-three".