21376770361771 has 24 divisors (see below), whose sum is σ = 23828783991264. Its totient is φ = 19158862800000.

The previous prime is 21376770361753. The next prime is 21376770361789. The reversal of 21376770361771 is 17716307767312.

It is an interprime number because it is at equal distance from previous prime (21376770361753) and next prime (21376770361789).

It is not a de Polignac number, because 21376770361771 - 2⁹ = 21376770361259 is a prime.

It is a super-2 number, since 2×21376770361771² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21376770361171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267836071 + ... + 267915871.

It is an arithmetic number, because the mean of its divisors is an integer number (992865999636).

Almost surely, 2^{21376770361771} is an apocalyptic number.

21376770361771 is a deficient number, since it is larger than the sum of its proper divisors (2452013629493).

21376770361771 is a wasteful number, since it uses less digits than its factorization.

21376770361771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111075 (or 111064 counting only the distinct ones).

The product of its (nonzero) digits is 10890936, while the sum is 58.

The spelling of 21376770361771 in words is "twenty-one trillion, three hundred seventy-six billion, seven hundred seventy million, three hundred sixty-one thousand, seven hundred seventy-one".