213154663790 has 32 divisors (see below), whose sum is σ = 387333287424. Its totient is φ = 84452925600.

The previous prime is 213154663769. The next prime is 213154663793. The reversal of 213154663790 is 97366451312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213154663793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320567 + ... + 727373.

It is an arithmetic number, because the mean of its divisors is an integer number (12104165232).

Almost surely, 2^213154663790 is an apocalyptic number.

213154663790 is a deficient number, since it is larger than the sum of its proper divisors (174178623634).

213154663790 is a wasteful number, since it uses less digits than its factorization.

213154663790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407312.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 213154663790 in words is "two hundred thirteen billion, one hundred fifty-four million, six hundred sixty-three thousand, seven hundred ninety".