16756621051 has 4 divisors (see below), whose sum is σ = 17334435600. Its totient is φ = 16178806504.

The previous prime is 16756621027. The next prime is 16756621061. The reversal of 16756621051 is 15012665761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16756621051 - 2¹⁵ = 16756588283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16756620995 and 16756621013.

It is not an unprimeable number, because it can be changed into a prime (16756621061) 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, 288907231 + ... + 288907288.

It is an arithmetic number, because the mean of its divisors is an integer number (4333608900).

Almost surely, 2^16756621051 is an apocalyptic number.

16756621051 is a deficient number, since it is larger than the sum of its proper divisors (577814549).

16756621051 is an equidigital number, since it uses as much as digits as its factorization.

16756621051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577814548.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 16756621051 in words is "sixteen billion, seven hundred fifty-six million, six hundred twenty-one thousand, fifty-one".