3146507729481 has 4 divisors (see below), whose sum is σ = 4195343639312. Its totient is φ = 2097671819652.

The previous prime is 3146507729471. The next prime is 3146507729531. The reversal of 3146507729481 is 1849277056413.

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 not a de Polignac number, because 3146507729481 - 2⁷ = 3146507729353 is a prime.

It is a super-2 number, since 2×3146507729481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3146507729461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524417954911 + ... + 524417954916.

It is an arithmetic number, because the mean of its divisors is an integer number (1048835909828).

It is a 1-persistent number, because it is pandigital, but 2⋅3146507729481 = 6293015458962 is not.

Almost surely, 2^{3146507729481} is an apocalyptic number.

It is an amenable number.

3146507729481 is a deficient number, since it is larger than the sum of its proper divisors (1048835909831).

3146507729481 is a wasteful number, since it uses less digits than its factorization.

3146507729481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048835909830.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 3146507729481 in words is "three trillion, one hundred forty-six billion, five hundred seven million, seven hundred twenty-nine thousand, four hundred eighty-one".