20257442868419 has 8 divisors (see below), whose sum is σ = 21359950530240. Its totient is φ = 19158567852456.

The previous prime is 20257442868407. The next prime is 20257442868431. The reversal of 20257442868419 is 91486824475202.

It is an interprime number because it is at equal distance from previous prime (20257442868407) and next prime (20257442868431).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20257442868419 is a prime.

It is a super-2 number, since 2×20257442868419² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20257442868119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908150009 + ... + 908172314.

It is an arithmetic number, because the mean of its divisors is an integer number (2669993816280).

Almost surely, 2^{20257442868419} is an apocalyptic number.

20257442868419 is a deficient number, since it is larger than the sum of its proper divisors (1102507661821).

20257442868419 is a wasteful number, since it uses less digits than its factorization.

20257442868419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816322929.

The product of its (nonzero) digits is 61931520, while the sum is 62.

The spelling of 20257442868419 in words is "twenty trillion, two hundred fifty-seven billion, four hundred forty-two million, eight hundred sixty-eight thousand, four hundred nineteen".