65130917845 has 24 divisors (see below), whose sum is σ = 90928597464. Its totient is φ = 44655722496.

The previous prime is 65130917767. The next prime is 65130917857. The reversal of 65130917845 is 54871903156.

It can be written as a sum of positive squares in 4 ways, for example, as 16148818084 + 48982099761 = 127078^2 + 221319^2 .

It is not a de Polignac number, because 65130917845 - 2¹⁵ = 65130885077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3959077 + ... + 3975493.

It is an arithmetic number, because the mean of its divisors is an integer number (3788691561).

Almost surely, 2^65130917845 is an apocalyptic number.

It is an amenable number.

65130917845 is a deficient number, since it is larger than the sum of its proper divisors (25797679619).

65130917845 is a wasteful number, since it uses less digits than its factorization.

65130917845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32629 (or 32622 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 65130917845 in words is "sixty-five billion, one hundred thirty million, nine hundred seventeen thousand, eight hundred forty-five".