213464668540 has 12 divisors (see below), whose sum is σ = 448275803976. Its totient is φ = 85385867408.

The previous prime is 213464668481. The next prime is 213464668541. The reversal of 213464668540 is 45866464312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213464668541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336616694 + ... + 5336616733.

It is an arithmetic number, because the mean of its divisors is an integer number (37356316998).

Almost surely, 2^213464668540 is an apocalyptic number.

213464668540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213464668540 is an abundant number, since it is smaller than the sum of its proper divisors (234811135436).

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

213464668540 is a wasteful number, since it uses less digits than its factorization.

213464668540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673233436 (or 10673233434 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 213464668540 in words is "two hundred thirteen billion, four hundred sixty-four million, six hundred sixty-eight thousand, five hundred forty".