45400601663561 has 2 divisors, whose sum is σ = 45400601663562. Its totient is φ = 45400601663560.

The previous prime is 45400601663551. The next prime is 45400601663587. The reversal of 45400601663561 is 16536610600454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32549523837961 + 12851077825600 = 5705219^2 + 3584840^2 .

It is a cyclic number.

It is not a de Polignac number, because 45400601663561 - 2⁴² = 41002555152457 is a prime.

It is a super-2 number, since 2×45400601663561² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45400601663551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22700300831780 + 22700300831781.

It is an arithmetic number, because the mean of its divisors is an integer number (22700300831781).

Almost surely, 2^{45400601663561} is an apocalyptic number.

It is an amenable number.

45400601663561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45400601663561 is an equidigital number, since it uses as much as digits as its factorization.

45400601663561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 45400601663561 in words is "forty-five trillion, four hundred billion, six hundred one million, six hundred sixty-three thousand, five hundred sixty-one".