2145523032254 has 32 divisors (see below), whose sum is σ = 3845835334656. Its totient is φ = 877725097920.

The previous prime is 2145523032251. The next prime is 2145523032287. The reversal of 2145523032254 is 4522303255412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145523032251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6684167 + ... + 6997794.

It is an arithmetic number, because the mean of its divisors is an integer number (120182354208).

Almost surely, 2^{2145523032254} is an apocalyptic number.

2145523032254 is a deficient number, since it is larger than the sum of its proper divisors (1700312302402).

2145523032254 is a wasteful number, since it uses less digits than its factorization.

2145523032254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682480.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 2145523032254 its reverse (4522303255412), we get a palindrome (6667826287666).

The spelling of 2145523032254 in words is "two trillion, one hundred forty-five billion, five hundred twenty-three million, thirty-two thousand, two hundred fifty-four".