213634901744 has 40 divisors (see below), whose sum is σ = 458948921520. Its totient is φ = 95514854400.

The previous prime is 213634901737. The next prime is 213634901771. The reversal of 213634901744 is 447109436312.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 213634901695 and 213634901704.

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, 9938729 + ... + 9960200.

It is an arithmetic number, because the mean of its divisors is an integer number (11473723038).

Almost surely, 2^213634901744 is an apocalyptic number.

It is an amenable number.

213634901744 is an abundant number, since it is smaller than the sum of its proper divisors (245314019776).

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

213634901744 is a wasteful number, since it uses less digits than its factorization.

213634901744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19899009 (or 19899003 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 213634901744 in words is "two hundred thirteen billion, six hundred thirty-four million, nine hundred one thousand, seven hundred forty-four".