213906517458 has 32 divisors (see below), whose sum is σ = 429657782400. Its totient is φ = 70994990976.

The previous prime is 213906517427. The next prime is 213906517499. The reversal of 213906517458 is 854715609312.

It is a super-2 number, since 2×213906517458² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213906517458.

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, 3168358 + ... + 3235166.

It is an arithmetic number, because the mean of its divisors is an integer number (13426805700).

It is a 1-persistent number, because it is pandigital, but 2⋅213906517458 = 427813034916 is not.

Almost surely, 2^213906517458 is an apocalyptic number.

213906517458 is an abundant number, since it is smaller than the sum of its proper divisors (215751264942).

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

213906517458 is a wasteful number, since it uses less digits than its factorization.

213906517458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69106.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 213906517458 in words is "two hundred thirteen billion, nine hundred six million, five hundred seventeen thousand, four hundred fifty-eight".