7535622661 has 24 divisors (see below), whose sum is σ = 9136953024. Its totient is φ = 6087052800.

The previous prime is 7535622637. The next prime is 7535622667. The reversal of 7535622661 is 1662265357.

It is not a de Polignac number, because 7535622661 - 2²¹ = 7533525509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7535622667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479986 + ... + 495436.

It is an arithmetic number, because the mean of its divisors is an integer number (380706376).

Almost surely, 2^7535622661 is an apocalyptic number.

It is an amenable number.

7535622661 is a deficient number, since it is larger than the sum of its proper divisors (1601330363).

7535622661 is a wasteful number, since it uses less digits than its factorization.

7535622661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15689 (or 15670 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 7535622661 is about 86807.9642717188. The cubic root of 7535622661 is about 1960.5279936868.

The spelling of 7535622661 in words is "seven billion, five hundred thirty-five million, six hundred twenty-two thousand, six hundred sixty-one".