8461813651 has 8 divisors (see below), whose sum is σ = 8530995744. Its totient is φ = 8392804800.

The previous prime is 8461813639. The next prime is 8461813663. The reversal of 8461813651 is 1563181648.

It is an interprime number because it is at equal distance from previous prime (8461813639) and next prime (8461813663).

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 8461813651 - 2³¹ = 6314330003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8461813598 and 8461813607.

It is not an unprimeable number, because it can be changed into a prime (8461813601) 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, 55695 + ... + 141511.

It is an arithmetic number, because the mean of its divisors is an integer number (1066374468).

Almost surely, 2^8461813651 is an apocalyptic number.

8461813651 is a deficient number, since it is larger than the sum of its proper divisors (69182093).

8461813651 is a wasteful number, since it uses less digits than its factorization.

8461813651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86621.

The product of its digits is 138240, while the sum is 43.

The square root of 8461813651 is about 91988.1169010433. The cubic root of 8461813651 is about 2037.7668157289.

The spelling of 8461813651 in words is "eight billion, four hundred sixty-one million, eight hundred thirteen thousand, six hundred fifty-one".