45511323561 has 48 divisors (see below), whose sum is σ = 76113535680. Its totient is φ = 26130772800.

The previous prime is 45511323553. The next prime is 45511323563. The reversal of 45511323561 is 16532311554.

45511323561 is a `hidden beast` number, since 4 + 55 + 11 + 32 + 3 + 561 = 666.

It is not a de Polignac number, because 45511323561 - 2³ = 45511323553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45511323563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127621 + ... + 327581.

It is an arithmetic number, because the mean of its divisors is an integer number (1585698660).

Almost surely, 2^45511323561 is an apocalyptic number.

It is an amenable number.

45511323561 is a deficient number, since it is larger than the sum of its proper divisors (30602212119).

45511323561 is a wasteful number, since it uses less digits than its factorization.

45511323561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200019 (or 199994 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 45511323561 in words is "forty-five billion, five hundred eleven million, three hundred twenty-three thousand, five hundred sixty-one".