611985140502420 has 192 divisors, whose sum is σ = 1726591204800000. Its totient is φ = 161959277297664.

The previous prime is 611985140502377. The next prime is 611985140502467. The reversal of 611985140502420 is 24205041589116.

It is a self number, because there is not a number n which added to its sum of digits gives 611985140502420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17203623754 + ... + 17203659326.

It is an arithmetic number, because the mean of its divisors is an integer number (8992662525000).

Almost surely, 2^{611985140502420} is an apocalyptic number.

611985140502420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

611985140502420 is an abundant number, since it is smaller than the sum of its proper divisors (1114606064297580).

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

611985140502420 is a wasteful number, since it uses less digits than its factorization.

611985140502420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39442 (or 39440 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 611985140502420 in words is "six hundred eleven trillion, nine hundred eighty-five billion, one hundred forty million, five hundred two thousand, four hundred twenty".