7561023681 has 8 divisors (see below), whose sum is σ = 10082857120. Its totient is φ = 5039936352.

The previous prime is 7561023653. The next prime is 7561023709. The reversal of 7561023681 is 1863201657.

It is an interprime number because it is at equal distance from previous prime (7561023653) and next prime (7561023709).

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

It is not a de Polignac number, because 7561023681 - 2⁷ = 7561023553 is a prime.

It is a super-2 number, since 2×7561023681² (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 (7561023641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162436 + ... + 203733.

It is an arithmetic number, because the mean of its divisors is an integer number (1260357140).

Almost surely, 2^7561023681 is an apocalyptic number.

It is an amenable number.

7561023681 is a deficient number, since it is larger than the sum of its proper divisors (2521833439).

7561023681 is a wasteful number, since it uses less digits than its factorization.

7561023681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373055.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 7561023681 is about 86954.1470028888. The cubic root of 7561023681 is about 1962.7283675233.

The spelling of 7561023681 in words is "seven billion, five hundred sixty-one million, twenty-three thousand, six hundred eighty-one".