497385277761 has 4 divisors (see below), whose sum is σ = 663180370352. Its totient is φ = 331590185172.

The previous prime is 497385277751. The next prime is 497385277771. The reversal of 497385277761 is 167772583794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (497385277751) and next prime (497385277771).

It is not a de Polignac number, because 497385277761 - 2⁵ = 497385277729 is a prime.

It is a super-2 number, since 2×497385277761² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 497385277692 and 497385277701.

It is not an unprimeable number, because it can be changed into a prime (497385277751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82897546291 + ... + 82897546296.

It is an arithmetic number, because the mean of its divisors is an integer number (165795092588).

Almost surely, 2^497385277761 is an apocalyptic number.

It is an amenable number.

497385277761 is a deficient number, since it is larger than the sum of its proper divisors (165795092591).

497385277761 is a wasteful number, since it uses less digits than its factorization.

497385277761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165795092590.

The product of its digits is 124467840, while the sum is 66.

The spelling of 497385277761 in words is "four hundred ninety-seven billion, three hundred eighty-five million, two hundred seventy-seven thousand, seven hundred sixty-one".