7561380081 has 8 divisors (see below), whose sum is σ = 10223838144. Its totient is φ = 4969921040.

The previous prime is 7561380067. The next prime is 7561380119. The reversal of 7561380081 is 1800831657.

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

It is a cyclic number.

It is not a de Polignac number, because 7561380081 - 2¹⁰ = 7561379057 is a prime.

It is a super-2 number, since 2×7561380081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7561380481) 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, 17749506 + ... + 17749931.

It is an arithmetic number, because the mean of its divisors is an integer number (1277979768).

Almost surely, 2^7561380081 is an apocalyptic number.

7561380081 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7561380081 is a deficient number, since it is larger than the sum of its proper divisors (2662458063).

7561380081 is a wasteful number, since it uses less digits than its factorization.

7561380081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35499511.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 7561380081 is about 86956.1963347064. The cubic root of 7561380081 is about 1962.7592057373.

The spelling of 7561380081 in words is "seven billion, five hundred sixty-one million, three hundred eighty thousand, eighty-one".