611078492640 has 1536 divisors, whose sum is σ = 2618588528640. Its totient is φ = 116069990400.

The previous prime is 611078492621. The next prime is 611078492641. The reversal of 611078492640 is 46294870116.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 611078492640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611078492641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1761032947 + ... + 1761033293.

It is an arithmetic number, because the mean of its divisors is an integer number (1704810240).

Almost surely, 2^611078492640 is an apocalyptic number.

611078492640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611078492640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309294264320).

611078492640 is an abundant number, since it is smaller than the sum of its proper divisors (2007510036000).

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

611078492640 is a wasteful number, since it uses less digits than its factorization.

611078492640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 611078492640 in words is "six hundred eleven billion, seventy-eight million, four hundred ninety-two thousand, six hundred forty".