2145234023541 has 80 divisors (see below), whose sum is σ = 3672335905920. Its totient is φ = 1222530641280.

The previous prime is 2145234023539. The next prime is 2145234023563. The reversal of 2145234023541 is 1453204325412.

It is a happy number.

2145234023541 is a `hidden beast` number, since 2 + 1 + 4 + 52 + 3 + 40 + 23 + 541 = 666.

It is not a de Polignac number, because 2145234023541 - 2¹ = 2145234023539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145234023496 and 2145234023505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145234023941) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 361208350 + ... + 361214288.

It is an arithmetic number, because the mean of its divisors is an integer number (45904198824).

Almost surely, 2^{2145234023541} is an apocalyptic number.

2145234023541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2145234023541 is a deficient number, since it is larger than the sum of its proper divisors (1527101882379).

2145234023541 is an equidigital number, since it uses as much as digits as its factorization.

2145234023541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576 (or 7567 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 2145234023541 its reverse (1453204325412), we get a palindrome (3598438348953).

The spelling of 2145234023541 in words is "two trillion, one hundred forty-five billion, two hundred thirty-four million, twenty-three thousand, five hundred forty-one".