213415613964 has 144 divisors (see below), whose sum is σ = 647210403840. Its totient is φ = 58008648960.

The previous prime is 213415613869. The next prime is 213415613969. The reversal of 213415613964 is 469316514312.

213415613964 is a `hidden beast` number, since 2 + 13 + 4 + 15 + 613 + 9 + 6 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (213415613969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229392 + ... + 692424.

Almost surely, 2^213415613964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213415613964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323605201920).

213415613964 is an abundant number, since it is smaller than the sum of its proper divisors (433794789876).

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

213415613964 is a wasteful number, since it uses less digits than its factorization.

213415613964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463140 (or 463135 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 213415613964 in words is "two hundred thirteen billion, four hundred fifteen million, six hundred thirteen thousand, nine hundred sixty-four".