21364711563140 has 48 divisors (see below), whose sum is σ = 48950138764800. Its totient is φ = 7768108750080.

The previous prime is 21364711563133. The next prime is 21364711563193. The reversal of 21364711563140 is 4136511746312.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 21364711563091 and 21364711563100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528665 + ... + 7428384.

It is an arithmetic number, because the mean of its divisors is an integer number (1019794557600).

Almost surely, 2^{21364711563140} is an apocalyptic number.

21364711563140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21364711563140 is an abundant number, since it is smaller than the sum of its proper divisors (27585427201660).

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

21364711563140 is a wasteful number, since it uses less digits than its factorization.

21364711563140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10965932 (or 10965930 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 21364711563140 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred eleven million, five hundred sixty-three thousand, one hundred forty".