1321566427934 has 16 divisors (see below), whose sum is σ = 2088603571200. Its totient is φ = 625429228824.

The previous prime is 1321566427873. The next prime is 1321566427981. The reversal of 1321566427934 is 4397246651231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15955964 + ... + 16038575.

It is an arithmetic number, because the mean of its divisors is an integer number (130537723200).

Almost surely, 2^{1321566427934} is an apocalyptic number.

1321566427934 is a deficient number, since it is larger than the sum of its proper divisors (767037143266).

1321566427934 is a wasteful number, since it uses less digits than its factorization.

1321566427934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31995647.

The product of its digits is 6531840, while the sum is 53.

The spelling of 1321566427934 in words is "one trillion, three hundred twenty-one billion, five hundred sixty-six million, four hundred twenty-seven thousand, nine hundred thirty-four".