83251473865 has 16 divisors (see below), whose sum is σ = 117856465920. Its totient is φ = 55245216960.

The previous prime is 83251473863. The next prime is 83251473869. The reversal of 83251473865 is 56837415238.

It is a happy number.

It is not a de Polignac number, because 83251473865 - 2¹ = 83251473863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83251473863) 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, 38363650 + ... + 38365819.

It is an arithmetic number, because the mean of its divisors is an integer number (7366029120).

Almost surely, 2^83251473865 is an apocalyptic number.

It is an amenable number.

83251473865 is a deficient number, since it is larger than the sum of its proper divisors (34604992055).

83251473865 is a wasteful number, since it uses less digits than its factorization.

83251473865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76729512.

The product of its digits is 4838400, while the sum is 52.

The spelling of 83251473865 in words is "eighty-three billion, two hundred fifty-one million, four hundred seventy-three thousand, eight hundred sixty-five".