16552251057 has 4 divisors (see below), whose sum is σ = 22069668080. Its totient is φ = 11034834036.

The previous prime is 16552250977. The next prime is 16552251103. The reversal of 16552251057 is 75015225561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16552251057 - 2¹² = 16552246961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16552251257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2758708507 + ... + 2758708512.

It is an arithmetic number, because the mean of its divisors is an integer number (5517417020).

Almost surely, 2^16552251057 is an apocalyptic number.

It is an amenable number.

16552251057 is a deficient number, since it is larger than the sum of its proper divisors (5517417023).

16552251057 is an equidigital number, since it uses as much as digits as its factorization.

16552251057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517417022.

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 16552251057 in words is "sixteen billion, five hundred fifty-two million, two hundred fifty-one thousand, fifty-seven".