35722747521 has 16 divisors (see below), whose sum is σ = 52962704320. Its totient is φ = 23797113120.

The previous prime is 35722747451. The next prime is 35722747559. The reversal of 35722747521 is 12574722753.

35722747521 is a `hidden beast` number, since 3 + 57 + 2 + 2 + 74 + 7 + 521 = 666.

It is not a de Polignac number, because 35722747521 - 2¹⁰ = 35722746497 is a prime.

It is a super-2 number, since 2×35722747521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35722747591) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 465115 + ... + 536448.

It is an arithmetic number, because the mean of its divisors is an integer number (3310169020).

Almost surely, 2^35722747521 is an apocalyptic number.

It is an amenable number.

35722747521 is a deficient number, since it is larger than the sum of its proper divisors (17239956799).

35722747521 is a wasteful number, since it uses less digits than its factorization.

35722747521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002893 (or 1002887 counting only the distinct ones).

The product of its digits is 823200, while the sum is 45.

The spelling of 35722747521 in words is "thirty-five billion, seven hundred twenty-two million, seven hundred forty-seven thousand, five hundred twenty-one".