45781992613 has 16 divisors (see below), whose sum is σ = 55410082560. Its totient is φ = 36926689536.

The previous prime is 45781992541. The next prime is 45781992617. The reversal of 45781992613 is 31629918754.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-45781992613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45781992617) 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, 688528 + ... + 752086.

It is an arithmetic number, because the mean of its divisors is an integer number (3463130160).

Almost surely, 2^45781992613 is an apocalyptic number.

It is an amenable number.

45781992613 is a deficient number, since it is larger than the sum of its proper divisors (9628089947).

45781992613 is a wasteful number, since it uses less digits than its factorization.

45781992613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69636.

The product of its digits is 3265920, while the sum is 55.

The spelling of 45781992613 in words is "forty-five billion, seven hundred eighty-one million, nine hundred ninety-two thousand, six hundred thirteen".