1475309317681 has 4 divisors (see below), whose sum is σ = 1522899940864. Its totient is φ = 1427718694500.

The previous prime is 1475309317661. The next prime is 1475309317723. The reversal of 1475309317681 is 1867139035741.

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 a cyclic number.

It is not a de Polignac number, because 1475309317681 - 2⁹ = 1475309317169 is a prime.

It is a super-2 number, since 2×1475309317681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1475309317661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23795311545 + ... + 23795311606.

It is an arithmetic number, because the mean of its divisors is an integer number (380724985216).

Almost surely, 2^{1475309317681} is an apocalyptic number.

It is an amenable number.

1475309317681 is a deficient number, since it is larger than the sum of its proper divisors (47590623183).

1475309317681 is an equidigital number, since it uses as much as digits as its factorization.

1475309317681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47590623182.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 1475309317681 in words is "one trillion, four hundred seventy-five billion, three hundred nine million, three hundred seventeen thousand, six hundred eighty-one".