611990160804 has 243 divisors, whose sum is σ = 1769735480331. Its totient is φ = 185029122960.

The previous prime is 611990160799. The next prime is 611990160809. The reversal of 611990160804 is 408061099116.

The square root of 611990160804 is 782298.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (611990160799) and next prime (611990160809).

It is a tau number, because it is divible by the number of its divisors (243).

It is a self number, because there is not a number n which added to its sum of digits gives 611990160804.

It is not an unprimeable number, because it can be changed into a prime (611990160809) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1394054817 + ... + 1394055255.

Almost surely, 2^611990160804 is an apocalyptic number.

611990160804 is the 782298-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611990160804

611990160804 is an abundant number, since it is smaller than the sum of its proper divisors (1157745319527).

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

611990160804 is an frugal number, since it uses more digits than its factorization.

611990160804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 611990160804 in words is "six hundred eleven billion, nine hundred ninety million, one hundred sixty thousand, eight hundred four".