2145156234441 has 24 divisors (see below), whose sum is σ = 3280555145280. Its totient is φ = 1243568826720.

The previous prime is 2145156234409. The next prime is 2145156234469. The reversal of 2145156234441 is 1444326515412.

It is not a de Polignac number, because 2145156234441 - 2⁵ = 2145156234409 is a prime.

It is a super-2 number, since 2×2145156234441² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145156234393 and 2145156234402.

It is not an unprimeable number, because it can be changed into a prime (2145156234491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128459506 + ... + 128476203.

It is an arithmetic number, because the mean of its divisors is an integer number (136689797720).

Almost surely, 2^{2145156234441} is an apocalyptic number.

It is an amenable number.

2145156234441 is a deficient number, since it is larger than the sum of its proper divisors (1135398910839).

2145156234441 is a wasteful number, since it uses less digits than its factorization.

2145156234441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256935757 (or 256935746 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The spelling of 2145156234441 in words is "two trillion, one hundred forty-five billion, one hundred fifty-six million, two hundred thirty-four thousand, four hundred forty-one".