1427869900843 has 4 divisors (see below), whose sum is σ = 1429148209840. Its totient is φ = 1426591591848.

The previous prime is 1427869900829. The next prime is 1427869900861. The reversal of 1427869900843 is 3480099687241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1427869900843 - 2³⁷ = 1290430947371 is a prime.

It is a super-2 number, since 2×1427869900843² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427869900643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639152823 + ... + 639155056.

It is an arithmetic number, because the mean of its divisors is an integer number (357287052460).

Almost surely, 2^{1427869900843} is an apocalyptic number.

1427869900843 is a deficient number, since it is larger than the sum of its proper divisors (1278308997).

1427869900843 is a wasteful number, since it uses less digits than its factorization.

1427869900843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278308996.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 1427869900843 in words is "one trillion, four hundred twenty-seven billion, eight hundred sixty-nine million, nine hundred thousand, eight hundred forty-three".