85051481724 has 36 divisors (see below), whose sum is σ = 234535905240. Its totient is φ = 25773176160.

The previous prime is 85051481689. The next prime is 85051481759. The reversal of 85051481724 is 42718415058.

85051481724 is a `hidden beast` number, since 8 + 50 + 51 + 481 + 72 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (85051481689) and next prime (85051481759).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 85051481724.

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 11 ways as a sum of consecutive naturals, for example, 107387839 + ... + 107388630.

Almost surely, 2^85051481724 is an apocalyptic number.

It is an amenable number.

85051481724 is an abundant number, since it is smaller than the sum of its proper divisors (149484423516).

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

85051481724 is a wasteful number, since it uses less digits than its factorization.

85051481724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214776490 (or 214776485 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 85051481724 in words is "eighty-five billion, fifty-one million, four hundred eighty-one thousand, seven hundred twenty-four".