3146507729479 has 4 divisors (see below), whose sum is σ = 3146513660784. Its totient is φ = 3146501798176.

The previous prime is 3146507729471. The next prime is 3146507729531. The reversal of 3146507729479 is 9749277056413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3146507729479 - 2³ = 3146507729471 is a prime.

It is a super-2 number, since 2×3146507729479² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3146507729479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3146507729471) 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, 2082187 + ... + 3260140.

It is an arithmetic number, because the mean of its divisors is an integer number (786628415196).

Almost surely, 2^{3146507729479} is an apocalyptic number.

3146507729479 is a deficient number, since it is larger than the sum of its proper divisors (5931305).

3146507729479 is an equidigital number, since it uses as much as digits as its factorization.

3146507729479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931304.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 3146507729479 in words is "three trillion, one hundred forty-six billion, five hundred seven million, seven hundred twenty-nine thousand, four hundred seventy-nine".