1427427271866 has 32 divisors (see below), whose sum is σ = 2903914137600. Its totient is φ = 467636226480.

The previous prime is 1427427271861. The next prime is 1427427271871. The reversal of 1427427271866 is 6681727247241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1427427271861) and next prime (1427427271871).

It is a super-2 number, since 2×1427427271866² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1427427271861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071351 + ... + 2000661.

It is an arithmetic number, because the mean of its divisors is an integer number (90747316800).

Almost surely, 2^{1427427271866} is an apocalyptic number.

1427427271866 is an abundant number, since it is smaller than the sum of its proper divisors (1476486865734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1427427271866 is a wasteful number, since it uses less digits than its factorization.

1427427271866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933714.

The product of its digits is 12644352, while the sum is 57.

The spelling of 1427427271866 in words is "one trillion, four hundred twenty-seven billion, four hundred twenty-seven million, two hundred seventy-one thousand, eight hundred sixty-six".