561578337481547 has 2 divisors, whose sum is σ = 561578337481548. Its totient is φ = 561578337481546.

The previous prime is 561578337481481. The next prime is 561578337481561. The reversal of 561578337481547 is 745184733875165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561578337481547 - 2²⁶ = 561578270372683 is a prime.

It is a super-2 number, since 2×561578337481547² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (561578337487547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280789168740773 + 280789168740774.

It is an arithmetic number, because the mean of its divisors is an integer number (280789168740774).

Almost surely, 2^{561578337481547} is an apocalyptic number.

561578337481547 is a deficient number, since it is larger than the sum of its proper divisors (1).

561578337481547 is an equidigital number, since it uses as much as digits as its factorization.

561578337481547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816000, while the sum is 74.

The spelling of 561578337481547 in words is "five hundred sixty-one trillion, five hundred seventy-eight billion, three hundred thirty-seven million, four hundred eighty-one thousand, five hundred forty-seven".