42454551522457 has 2 divisors, whose sum is σ = 42454551522458. Its totient is φ = 42454551522456.

The previous prime is 42454551522443. The next prime is 42454551522469. The reversal of 42454551522457 is 75422515545424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26410513261456 + 16044038261001 = 5139116^2 + 4005501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42454551522457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42454551522398 and 42454551522407.

It is not a weakly prime, because it can be changed into another prime (42454551522437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21227275761228 + 21227275761229.

It is an arithmetic number, because the mean of its divisors is an integer number (21227275761229).

Almost surely, 2^{42454551522457} is an apocalyptic number.

It is an amenable number.

42454551522457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42454551522457 is an equidigital number, since it uses as much as digits as its factorization.

42454551522457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800000, while the sum is 55.

The spelling of 42454551522457 in words is "forty-two trillion, four hundred fifty-four billion, five hundred fifty-one million, five hundred twenty-two thousand, four hundred fifty-seven".