7802243661 has 16 divisors (see below), whose sum is σ = 10661590016. Its totient is φ = 5072575536.

The previous prime is 7802243641. The next prime is 7802243677. The reversal of 7802243661 is 1663422087.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-7802243661 is a prime.

It is a super-2 number, since 2×7802243661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7802243621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35916 + ... + 129978.

It is an arithmetic number, because the mean of its divisors is an integer number (666349376).

Almost surely, 2^7802243661 is an apocalyptic number.

It is an amenable number.

7802243661 is a deficient number, since it is larger than the sum of its proper divisors (2859346355).

7802243661 is a wasteful number, since it uses less digits than its factorization.

7802243661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94752.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 7802243661 is about 88330.3099790780. The cubic root of 7802243661 is about 1983.3826187942.

The spelling of 7802243661 in words is "seven billion, eight hundred two million, two hundred forty-three thousand, six hundred sixty-one".