2045381512554 has 24 divisors (see below), whose sum is σ = 4692345823620. Its totient is φ = 641688317568.

The previous prime is 2045381512547. The next prime is 2045381512567. The reversal of 2045381512554 is 4552151835402.

2045381512554 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 3 + 81 + 5 + 12 + 554 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1989716188329 + 55665324225 = 1410573^2 + 235935^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3342126349 + ... + 3342126960.

Almost surely, 2^{2045381512554} is an apocalyptic number.

2045381512554 is an abundant number, since it is smaller than the sum of its proper divisors (2646964311066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2045381512554 is a wasteful number, since it uses less digits than its factorization.

2045381512554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684253334 (or 6684253331 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 45.

The spelling of 2045381512554 in words is "two trillion, forty-five billion, three hundred eighty-one million, five hundred twelve thousand, five hundred fifty-four".