2045021125541 has 2 divisors, whose sum is σ = 2045021125542. Its totient is φ = 2045021125540.

The previous prime is 2045021125529. The next prime is 2045021125571. The reversal of 2045021125541 is 1455211205402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089800284225 + 955220841316 = 1043935^2 + 977354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045021125541 is a prime.

It is a super-2 number, since 2×2045021125541² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2045021125498 and 2045021125507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045021125571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022510562770 + 1022510562771.

It is an arithmetic number, because the mean of its divisors is an integer number (1022510562771).

Almost surely, 2^{2045021125541} is an apocalyptic number.

It is an amenable number.

2045021125541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045021125541 is an equidigital number, since it uses as much as digits as its factorization.

2045021125541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 2045021125541 in words is "two trillion, forty-five billion, twenty-one million, one hundred twenty-five thousand, five hundred forty-one".