8461538477 has 16 divisors (see below), whose sum is σ = 9824256000. Its totient is φ = 7138169712.

The previous prime is 8461538447. The next prime is 8461538479. The reversal of 8461538477 is 7748351648.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8461538477 - 2¹⁴ = 8461522093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461538479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81524 + ... + 153522.

It is an arithmetic number, because the mean of its divisors is an integer number (614016000).

Almost surely, 2^8461538477 is an apocalyptic number.

It is an amenable number.

8461538477 is a deficient number, since it is larger than the sum of its proper divisors (1362717523).

8461538477 is a wasteful number, since it uses less digits than its factorization.

8461538477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72272.

The product of its digits is 4515840, while the sum is 53.

The square root of 8461538477 is about 91986.6211848223. The cubic root of 8461538477 is about 2037.7447264327.

The spelling of 8461538477 in words is "eight billion, four hundred sixty-one million, five hundred thirty-eight thousand, four hundred seventy-seven".