213455563516 has 24 divisors (see below), whose sum is σ = 402359113520. Its totient is φ = 98498979072.

The previous prime is 213455563507. The next prime is 213455563543. The reversal of 213455563516 is 615365554312.

It is a super-2 number, since 2×213455563516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120861 + ... + 664468.

Almost surely, 2^213455563516 is an apocalyptic number.

213455563516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213455563516 is a deficient number, since it is larger than the sum of its proper divisors (188903550004).

213455563516 is a wasteful number, since it uses less digits than its factorization.

213455563516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790573 (or 790571 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 46.

The spelling of 213455563516 in words is "two hundred thirteen billion, four hundred fifty-five million, five hundred sixty-three thousand, five hundred sixteen".