617451345775 has 48 divisors (see below), whose sum is σ = 845068733568. Its totient is φ = 443793168000.

The previous prime is 617451345767. The next prime is 617451345781. The reversal of 617451345775 is 577543154716.

It is a happy number.

It is not a de Polignac number, because 617451345775 - 2³ = 617451345767 is a prime.

It is a super-2 number, since 2×617451345775² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

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 47 ways as a sum of consecutive naturals, for example, 12363004 + ... + 12412846.

It is an arithmetic number, because the mean of its divisors is an integer number (17605598616).

Almost surely, 2^617451345775 is an apocalyptic number.

617451345775 is a deficient number, since it is larger than the sum of its proper divisors (227617387793).

617451345775 is a wasteful number, since it uses less digits than its factorization.

617451345775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50392 (or 50387 counting only the distinct ones).

The product of its digits is 12348000, while the sum is 55.

The spelling of 617451345775 in words is "six hundred seventeen billion, four hundred fifty-one million, three hundred forty-five thousand, seven hundred seventy-five".