21776322252373 has 8 divisors (see below), whose sum is σ = 23504844070400. Its totient is φ = 20055431878128.

The previous prime is 21776322252361. The next prime is 21776322252427. The reversal of 21776322252373 is 37325222367712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21776322252373 - 2¹³ = 21776322244181 is a prime.

It is a super-2 number, since 2×21776322252373² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21776322252373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21776322202373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1907855013 + ... + 1907866426.

It is an arithmetic number, because the mean of its divisors is an integer number (2938105508800).

Almost surely, 2^{21776322252373} is an apocalyptic number.

It is an amenable number.

21776322252373 is a deficient number, since it is larger than the sum of its proper divisors (1728521818027).

21776322252373 is a wasteful number, since it uses less digits than its factorization.

21776322252373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815721891.

The product of its digits is 8890560, while the sum is 52.

The spelling of 21776322252373 in words is "twenty-one trillion, seven hundred seventy-six billion, three hundred twenty-two million, two hundred fifty-two thousand, three hundred seventy-three".