213663505526436 has 48 divisors (see below), whose sum is σ = 574118732436480. Its totient is φ = 60580710396960.

The previous prime is 213663505526413. The next prime is 213663505526459. The reversal of 213663505526436 is 634625505366312.

It is an interprime number because it is at equal distance from previous prime (213663505526413) and next prime (213663505526459).

It is a super-2 number, since 2×213663505526436² (a number of 29 digits) contains 22 as substring.

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, 9708436176 + ... + 9708458183.

It is an arithmetic number, because the mean of its divisors is an integer number (11960806925760).

Almost surely, 2^{213663505526436} is an apocalyptic number.

It is an amenable number.

213663505526436 is an abundant number, since it is smaller than the sum of its proper divisors (360455226910044).

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

213663505526436 is a wasteful number, since it uses less digits than its factorization.

213663505526436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19416894504 (or 19416894502 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 57.

The spelling of 213663505526436 in words is "two hundred thirteen trillion, six hundred sixty-three billion, five hundred five million, five hundred twenty-six thousand, four hundred thirty-six".