16635776006399 has 12 divisors (see below), whose sum is σ = 18293152033968. Its totient is φ = 15117190851840.

The previous prime is 16635776006371. The next prime is 16635776006407. The reversal of 16635776006399 is 99360067753661.

It is not a de Polignac number, because 16635776006399 - 2²⁴ = 16635759229183 is a prime.

It is a super-2 number, since 2×16635776006399² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16635776008399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28077794 + ... + 28664159.

It is an arithmetic number, because the mean of its divisors is an integer number (1524429336164).

Almost surely, 2^{16635776006399} is an apocalyptic number.

16635776006399 is a deficient number, since it is larger than the sum of its proper divisors (1657376027569).

16635776006399 is a wasteful number, since it uses less digits than its factorization.

16635776006399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56744398 (or 56744387 counting only the distinct ones).

The product of its (nonzero) digits is 231472080, while the sum is 68.

The spelling of 16635776006399 in words is "sixteen trillion, six hundred thirty-five billion, seven hundred seventy-six million, six thousand, three hundred ninety-nine".