42671347851553 has 2 divisors, whose sum is σ = 42671347851554. Its totient is φ = 42671347851552.

The previous prime is 42671347851529. The next prime is 42671347851569. The reversal of 42671347851553 is 35515874317624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38607184587024 + 4064163264529 = 6213468^2 + 2015977^2 .

It is a cyclic number.

It is not a de Polignac number, because 42671347851553 - 2²⁹ = 42670810980641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42671347851491 and 42671347851500.

It is not a weakly prime, because it can be changed into another prime (42671347851653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21335673925776 + 21335673925777.

It is an arithmetic number, because the mean of its divisors is an integer number (21335673925777).

Almost surely, 2^{42671347851553} is an apocalyptic number.

It is an amenable number.

42671347851553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42671347851553 is an equidigital number, since it uses as much as digits as its factorization.

42671347851553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672000, while the sum is 61.

The spelling of 42671347851553 in words is "forty-two trillion, six hundred seventy-one billion, three hundred forty-seven million, eight hundred fifty-one thousand, five hundred fifty-three".