8615457961 has 8 divisors (see below), whose sum is σ = 9627918048. Its totient is φ = 7641204000.

The previous prime is 8615457947. The next prime is 8615457979. The reversal of 8615457961 is 1697545168.

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 8615457961 - 2¹¹ = 8615455913 is a prime.

It is a super-2 number, since 2×8615457961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8615457899 and 8615457908.

It is not an unprimeable number, because it can be changed into a prime (8615457901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9551055 + ... + 9551956.

It is an arithmetic number, because the mean of its divisors is an integer number (1203489756).

Almost surely, 2^8615457961 is an apocalyptic number.

It is an amenable number.

8615457961 is a deficient number, since it is larger than the sum of its proper divisors (1012460087).

8615457961 is a wasteful number, since it uses less digits than its factorization.

8615457961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19103063.

The product of its digits is 1814400, while the sum is 52.

The square root of 8615457961 is about 92819.4912774251. The cubic root of 8615457961 is about 2050.0264094159.

The spelling of 8615457961 in words is "eight billion, six hundred fifteen million, four hundred fifty-seven thousand, nine hundred sixty-one".