210791934090 has 64 divisors (see below), whose sum is σ = 570501601920. Its totient is φ = 55372204800.

The previous prime is 210791934037. The next prime is 210791934121. The reversal of 210791934090 is 90439197012.

210791934090 is a `hidden beast` number, since 210 + 7 + 9 + 1 + 9 + 340 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5808111 + ... + 5844290.

It is an arithmetic number, because the mean of its divisors is an integer number (8914087530).

Almost surely, 2^210791934090 is an apocalyptic number.

210791934090 is an abundant number, since it is smaller than the sum of its proper divisors (359709667830).

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

210791934090 is a wasteful number, since it uses less digits than its factorization.

210791934090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11652484 (or 11652478 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 210791934090 in words is "two hundred ten billion, seven hundred ninety-one million, nine hundred thirty-four thousand, ninety".