16213620077765 has 32 divisors (see below), whose sum is σ = 21274672799232. Its totient is φ = 11764188904000.

The previous prime is 16213620077719. The next prime is 16213620077797. The reversal of 16213620077765 is 56777002631261.

16213620077765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16213620077765 - 2¹⁴ = 16213620061381 is a prime.

It is a super-3 number, since 3×16213620077765³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567470930 + ... + 567499500.

It is an arithmetic number, because the mean of its divisors is an integer number (664833524976).

Almost surely, 2^{16213620077765} is an apocalyptic number.

It is an amenable number.

16213620077765 is a deficient number, since it is larger than the sum of its proper divisors (5061052721467).

16213620077765 is a wasteful number, since it uses less digits than its factorization.

16213620077765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52321.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 16213620077765 in words is "sixteen trillion, two hundred thirteen billion, six hundred twenty million, seventy-seven thousand, seven hundred sixty-five".