16550151705021 has 16 divisors (see below), whose sum is σ = 24723568150848. Its totient is φ = 9759303216000.

The previous prime is 16550151705001. The next prime is 16550151705077. The reversal of 16550151705021 is 12050715105561.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16550151705021 is a prime.

It is a super-2 number, since 2×16550151705021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550151705001) 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, 6777292680 + ... + 6777295121.

It is an arithmetic number, because the mean of its divisors is an integer number (1545223009428).

Almost surely, 2^{16550151705021} is an apocalyptic number.

16550151705021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16550151705021 is a deficient number, since it is larger than the sum of its proper divisors (8173416445827).

16550151705021 is a wasteful number, since it uses less digits than its factorization.

16550151705021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13554587852.

The product of its (nonzero) digits is 52500, while the sum is 39.

The spelling of 16550151705021 in words is "sixteen trillion, five hundred fifty billion, one hundred fifty-one million, seven hundred five thousand, twenty-one".