2145015523011 has 4 divisors (see below), whose sum is σ = 2860020697352. Its totient is φ = 1430010348672.

The previous prime is 2145015523009. The next prime is 2145015523043. The reversal of 2145015523011 is 1103255105412.

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

It is not a de Polignac number, because 2145015523011 - 2¹ = 2145015523009 is a prime.

It is a super-2 number, since 2×2145015523011² (a number of 25 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 2145015523011.

It is not an unprimeable number, because it can be changed into a prime (2145015523081) 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, 357502587166 + ... + 357502587171.

It is an arithmetic number, because the mean of its divisors is an integer number (715005174338).

Almost surely, 2^{2145015523011} is an apocalyptic number.

2145015523011 is a deficient number, since it is larger than the sum of its proper divisors (715005174341).

2145015523011 is an equidigital number, since it uses as much as digits as its factorization.

2145015523011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715005174340.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 2145015523011 in words is "two trillion, one hundred forty-five billion, fifteen million, five hundred twenty-three thousand, eleven".