2145145064131 has 4 divisors (see below), whose sum is σ = 2172298799200. Its totient is φ = 2117991329064.

The previous prime is 2145145064119. The next prime is 2145145064149. The reversal of 2145145064131 is 1314605415412.

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 2145145064131 - 2⁵ = 2145145064099 is a prime.

It is a super-2 number, since 2×2145145064131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145145064831) 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, 13576867416 + ... + 13576867573.

It is an arithmetic number, because the mean of its divisors is an integer number (543074699800).

Almost surely, 2^{2145145064131} is an apocalyptic number.

2145145064131 is a deficient number, since it is larger than the sum of its proper divisors (27153735069).

2145145064131 is an equidigital number, since it uses as much as digits as its factorization.

2145145064131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27153735068.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 2145145064131 in words is "two trillion, one hundred forty-five billion, one hundred forty-five million, sixty-four thousand, one hundred thirty-one".