21361746713370 has 64 divisors (see below), whose sum is σ = 58595547709440. Its totient is φ = 4882407617088.

The previous prime is 21361746713353. The next prime is 21361746713371. The reversal of 21361746713370 is 7331764716312.

It is not an unprimeable number, because it can be changed into a prime (21361746713371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 828199 + ... + 6588581.

It is an arithmetic number, because the mean of its divisors is an integer number (915555432960).

Almost surely, 2^{21361746713370} is an apocalyptic number.

21361746713370 is an abundant number, since it is smaller than the sum of its proper divisors (37233800996070).

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

21361746713370 is a wasteful number, since it uses less digits than its factorization.

21361746713370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778059.

The product of its (nonzero) digits is 2667168, while the sum is 51.

The spelling of 21361746713370 in words is "twenty-one trillion, three hundred sixty-one billion, seven hundred forty-six million, seven hundred thirteen thousand, three hundred seventy".