7999692481 has 27 divisors (see below), whose sum is σ = 9036348643. Its totient is φ = 7076571920.

The previous prime is 7999692469. The next prime is 7999692487. The reversal of 7999692481 is 1842969997.

The square root of 7999692481 is 89441.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7276943025 + 722749456 = 85305^2 + 26884^2 .

It is not a de Polignac number, because 7999692481 - 2⁹ = 7999691969 is a prime.

It is a super-2 number, since 2×7999692481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7999692487) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 46240911 + ... + 46241083.

Almost surely, 2^7999692481 is an apocalyptic number.

7999692481 is the 89441-st square number.

7999692481 is the 44721-st centered octagonal number.

It is an amenable number.

7999692481 is a deficient number, since it is larger than the sum of its proper divisors (1036656162).

7999692481 is an equidigital number, since it uses as much as digits as its factorization.

7999692481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 231 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 64.

The cubic root of 7999692481 is about 1999.9743730883.

Multiplying 7999692481 by its sum of digits (64), we get a square (511980318784 = 715528²).

The spelling of 7999692481 in words is "seven billion, nine hundred ninety-nine million, six hundred ninety-two thousand, four hundred eighty-one".