21379062036 has 24 divisors (see below), whose sum is σ = 49972164480. Its totient is φ = 7113827392.

The previous prime is 21379062031. The next prime is 21379062077. The reversal of 21379062036 is 63026097312.

It is a junction number, because it is equal to n+sod(n) for n = 21379061985 and 21379062003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21379062031) 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, 1558716 + ... + 1572371.

It is an arithmetic number, because the mean of its divisors is an integer number (2082173520).

Almost surely, 2^21379062036 is an apocalyptic number.

It is an amenable number.

21379062036 is an abundant number, since it is smaller than the sum of its proper divisors (28593102444).

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

21379062036 is a wasteful number, since it uses less digits than its factorization.

21379062036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131663 (or 3131661 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The spelling of 21379062036 in words is "twenty-one billion, three hundred seventy-nine million, sixty-two thousand, thirty-six".