7561281641 has 8 divisors (see below), whose sum is σ = 8264323584. Its totient is φ = 6886935360.

The previous prime is 7561281619. The next prime is 7561281659. The reversal of 7561281641 is 1461821657.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7561281641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7561281601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7173365 + ... + 7174418.

It is an arithmetic number, because the mean of its divisors is an integer number (1033040448).

Almost surely, 2^7561281641 is an apocalyptic number.

It is an amenable number.

7561281641 is a deficient number, since it is larger than the sum of its proper divisors (703041943).

7561281641 is a wasteful number, since it uses less digits than its factorization.

7561281641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14347831.

The product of its digits is 80640, while the sum is 41.

The square root of 7561281641 is about 86955.6303007459. The cubic root of 7561281641 is about 1962.7506881187.

The spelling of 7561281641 in words is "seven billion, five hundred sixty-one million, two hundred eighty-one thousand, six hundred forty-one".