611191791396 has 72 divisors (see below), whose sum is σ = 1587509099904. Its totient is φ = 198172526400.

The previous prime is 611191791373. The next prime is 611191791407. The reversal of 611191791396 is 693197191116.

611191791396 is a `hidden beast` number, since 61 + 1 + 191 + 7 + 9 + 1 + 396 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 832255 + ... + 1383846.

Almost surely, 2^611191791396 is an apocalyptic number.

It is an amenable number.

611191791396 is an abundant number, since it is smaller than the sum of its proper divisors (976317308508).

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

611191791396 is a wasteful number, since it uses less digits than its factorization.

611191791396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216321 (or 2216316 counting only the distinct ones).

The product of its digits is 551124, while the sum is 54.

The spelling of 611191791396 in words is "six hundred eleven billion, one hundred ninety-one million, seven hundred ninety-one thousand, three hundred ninety-six".