85720412740 has 24 divisors (see below), whose sum is σ = 190601859672. Its totient is φ = 32271214080.

The previous prime is 85720412737. The next prime is 85720412783. The reversal of 85720412740 is 4721402758.

It can be written as a sum of positive squares in 4 ways, for example, as 8437524736 + 77282888004 = 91856^2 + 277998^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85720412693 and 85720412702.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 126059091 + ... + 126059770.

It is an arithmetic number, because the mean of its divisors is an integer number (7941744153).

Almost surely, 2^85720412740 is an apocalyptic number.

It is an amenable number.

85720412740 is an abundant number, since it is smaller than the sum of its proper divisors (104881446932).

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

85720412740 is a wasteful number, since it uses less digits than its factorization.

85720412740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252118887 (or 252118885 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 85720412740 in words is "eighty-five billion, seven hundred twenty million, four hundred twelve thousand, seven hundred forty".