21354674706760 has 16 divisors (see below), whose sum is σ = 48048018090300. Its totient is φ = 8541869882688.

The previous prime is 21354674706733. The next prime is 21354674706791. The reversal of 21354674706760 is 6760747645312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21260195930884 + 94478775876 = 4610878^2 + 307374^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21354674706695 and 21354674706704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266933433795 + ... + 266933433874.

Almost surely, 2^{21354674706760} is an apocalyptic number.

21354674706760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21354674706760 is an abundant number, since it is smaller than the sum of its proper divisors (26693343383540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21354674706760 is a wasteful number, since it uses less digits than its factorization.

21354674706760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533866867680 (or 533866867676 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 58.

The spelling of 21354674706760 in words is "twenty-one trillion, three hundred fifty-four billion, six hundred seventy-four million, seven hundred six thousand, seven hundred sixty".