21364117211470 has 64 divisors (see below), whose sum is σ = 42062588485632. Its totient is φ = 7748196048000.

The previous prime is 21364117211443. The next prime is 21364117211473. The reversal of 21364117211470 is 7411271146312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364117211473) 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, 70006515 + ... + 70311025.

It is an arithmetic number, because the mean of its divisors is an integer number (657227945088).

Almost surely, 2^{21364117211470} is an apocalyptic number.

21364117211470 is a deficient number, since it is larger than the sum of its proper divisors (20698471274162).

21364117211470 is a wasteful number, since it uses less digits than its factorization.

21364117211470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306217.

The product of its (nonzero) digits is 56448, while the sum is 40.

Adding to 21364117211470 its reverse (7411271146312), we get a palindrome (28775388357782).

The spelling of 21364117211470 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred seventeen million, two hundred eleven thousand, four hundred seventy".