7661299043 has 4 divisors (see below), whose sum is σ = 7661824368. Its totient is φ = 7660773720.

The previous prime is 7661299027. The next prime is 7661299081. The reversal of 7661299043 is 3409921667.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7661299043 - 2⁴ = 7661299027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661299013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240143 + ... + 270168.

It is an arithmetic number, because the mean of its divisors is an integer number (1915456092).

Almost surely, 2^7661299043 is an apocalyptic number.

7661299043 is a deficient number, since it is larger than the sum of its proper divisors (525325).

7661299043 is a wasteful number, since it uses less digits than its factorization.

7661299043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525324.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 7661299043 is about 87528.8469191729. The cubic root of 7661299043 is about 1971.3669507322.

The spelling of 7661299043 in words is "seven billion, six hundred sixty-one million, two hundred ninety-nine thousand, forty-three".