611055672520 has 32 divisors (see below), whose sum is σ = 1374999060600. Its totient is φ = 244400260608.

The previous prime is 611055672509. The next prime is 611055672607. The reversal of 611055672520 is 25276550116.

It can be written as a sum of positive squares in 4 ways, for example, as 462119882436 + 148935790084 = 679794^2 + 385922^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234285 + ... + 1130044.

Almost surely, 2^611055672520 is an apocalyptic number.

It is an amenable number.

611055672520 is an abundant number, since it is smaller than the sum of its proper divisors (763943388080).

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

611055672520 is a wasteful number, since it uses less digits than its factorization.

611055672520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375537 (or 1375533 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 611055672520 in words is "six hundred eleven billion, fifty-five million, six hundred seventy-two thousand, five hundred twenty".