2045045035381 has 2 divisors, whose sum is σ = 2045045035382. Its totient is φ = 2045045035380.

The previous prime is 2045045035361. The next prime is 2045045035469. The reversal of 2045045035381 is 1835305405402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1968002151025 + 77042884356 = 1402855^2 + 277566^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045045035381 - 2²³ = 2045036646773 is a prime.

It is a super-2 number, since 2×2045045035381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045045035361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022522517690 + 1022522517691.

It is an arithmetic number, because the mean of its divisors is an integer number (1022522517691).

Almost surely, 2^{2045045035381} is an apocalyptic number.

It is an amenable number.

2045045035381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045045035381 is an equidigital number, since it uses as much as digits as its factorization.

2045045035381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 2045045035381 in words is "two trillion, forty-five billion, forty-five million, thirty-five thousand, three hundred eighty-one".