73727974753 has 6 divisors (see below), whose sum is σ = 76357986614. Its totient is φ = 71185629984.

The previous prime is 73727974717. The next prime is 73727974787. The reversal of 73727974753 is 35747972737.

It can be written as a sum of positive squares in 3 ways, for example, as 2317170769 + 71410803984 = 48137^2 + 267228^2 .

It is not a de Polignac number, because 73727974753 - 2¹⁷ = 73727843681 is a prime.

It is a super-2 number, since 2×73727974753² (a number of 23 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 = 73727974691 and 73727974700.

It is not an unprimeable number, because it can be changed into a prime (73727975753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43832676 + ... + 43834357.

Almost surely, 2^73727974753 is an apocalyptic number.

It is an amenable number.

73727974753 is a deficient number, since it is larger than the sum of its proper divisors (2630011861).

73727974753 is an equidigital number, since it uses as much as digits as its factorization.

73727974753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87667091 (or 87667062 counting only the distinct ones).

The product of its digits is 54454680, while the sum is 61.

The spelling of 73727974753 in words is "seventy-three billion, seven hundred twenty-seven million, nine hundred seventy-four thousand, seven hundred fifty-three".