1427964147791 has 4 divisors (see below), whose sum is σ = 1428010909512. Its totient is φ = 1427917386072.

The previous prime is 1427964147781. The next prime is 1427964147793. The reversal of 1427964147791 is 1977414697241.

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 1427964147791 - 2¹⁰ = 1427964146767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427964147793) 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, 23335025 + ... + 23396138.

It is an arithmetic number, because the mean of its divisors is an integer number (357002727378).

Almost surely, 2^{1427964147791} is an apocalyptic number.

1427964147791 is a deficient number, since it is larger than the sum of its proper divisors (46761721).

1427964147791 is an equidigital number, since it uses as much as digits as its factorization.

1427964147791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46761720.

The product of its digits is 21337344, while the sum is 62.

The spelling of 1427964147791 in words is "one trillion, four hundred twenty-seven billion, nine hundred sixty-four million, one hundred forty-seven thousand, seven hundred ninety-one".