617983713545 has 16 divisors (see below), whose sum is σ = 812624666112. Its totient is φ = 447427253760.

The previous prime is 617983713539. The next prime is 617983713667. The reversal of 617983713545 is 545317389716.

It is a happy number.

It is not a de Polignac number, because 617983713545 - 2¹² = 617983709449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25180712 + ... + 25205241.

It is an arithmetic number, because the mean of its divisors is an integer number (50789041632).

Almost surely, 2^617983713545 is an apocalyptic number.

It is an amenable number.

617983713545 is a deficient number, since it is larger than the sum of its proper divisors (194640952567).

617983713545 is a wasteful number, since it uses less digits than its factorization.

617983713545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50386192.

The product of its digits is 19051200, while the sum is 59.

The spelling of 617983713545 in words is "six hundred seventeen billion, nine hundred eighty-three million, seven hundred thirteen thousand, five hundred forty-five".