213149345902 has 32 divisors (see below), whose sum is σ = 332180352000. Its totient is φ = 102502361568.

The previous prime is 213149345897. The next prime is 213149345909. The reversal of 213149345902 is 209543941312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213149345909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21419224 + ... + 21429172.

It is an arithmetic number, because the mean of its divisors is an integer number (10380636000).

Almost surely, 2^213149345902 is an apocalyptic number.

213149345902 is a deficient number, since it is larger than the sum of its proper divisors (119031006098).

213149345902 is a wasteful number, since it uses less digits than its factorization.

213149345902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13920.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 213149345902 in words is "two hundred thirteen billion, one hundred forty-nine million, three hundred forty-five thousand, nine hundred two".