611728757079552 has 320 divisors, whose sum is σ = 2178357422630400. Its totient is φ = 165580715704320.

The previous prime is 611728757079527. The next prime is 611728757079589. The reversal of 611728757079552 is 255970757827116.

611728757079552 is a `hidden beast` number, since 6 + 1 + 17 + 2 + 8 + 7 + 57 + 0 + 7 + 9 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 164519349 + ... + 168196532.

It is an arithmetic number, because the mean of its divisors is an integer number (6807366945720).

Almost surely, 2^{611728757079552} is an apocalyptic number.

It is an amenable number.

611728757079552 is an abundant number, since it is smaller than the sum of its proper divisors (1566628665550848).

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

611728757079552 is a wasteful number, since it uses less digits than its factorization.

611728757079552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332715934 (or 332715912 counting only the distinct ones).

The product of its (nonzero) digits is 518616000, while the sum is 72.

The spelling of 611728757079552 in words is "six hundred eleven trillion, seven hundred twenty-eight billion, seven hundred fifty-seven million, seventy-nine thousand, five hundred fifty-two".