45420426555561 has 12 divisors (see below), whose sum is σ = 65607341391540. Its totient is φ = 30280257329280.

The previous prime is 45420426555557. The next prime is 45420426555599. The reversal of 45420426555561 is 16555562402454.

45420426555561 is a `hidden beast` number, since 4 + 5 + 4 + 2 + 0 + 4 + 26 + 5 + 55 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15001407117225 + 30419019438336 = 3873165^2 + 5515344^2 .

It is not a de Polignac number, because 45420426555561 - 2² = 45420426555557 is a prime.

It is a super-2 number, since 2×45420426555561² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45420426555498 and 45420426555507.

It is not an unprimeable number, because it can be changed into a prime (45420426555541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17475805 + ... + 19905893.

It is an arithmetic number, because the mean of its divisors is an integer number (5467278449295).

Almost surely, 2^{45420426555561} is an apocalyptic number.

It is an amenable number.

45420426555561 is a deficient number, since it is larger than the sum of its proper divisors (20186914835979).

45420426555561 is a wasteful number, since it uses less digits than its factorization.

45420426555561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506856 (or 4506853 counting only the distinct ones).

The product of its (nonzero) digits is 28800000, while the sum is 54.

The spelling of 45420426555561 in words is "forty-five trillion, four hundred twenty billion, four hundred twenty-six million, five hundred fifty-five thousand, five hundred sixty-one".