1321747634746 has 32 divisors (see below), whose sum is σ = 2508732882432. Its totient is φ = 507280538160.

The previous prime is 1321747634723. The next prime is 1321747634777. The reversal of 1321747634746 is 6474367471231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64040256 + ... + 64060891.

It is an arithmetic number, because the mean of its divisors is an integer number (78397902576).

Almost surely, 2^{1321747634746} is an apocalyptic number.

1321747634746 is a deficient number, since it is larger than the sum of its proper divisors (1186985247686).

1321747634746 is a wasteful number, since it uses less digits than its factorization.

1321747634746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128101234.

The product of its digits is 14224896, while the sum is 55.

The spelling of 1321747634746 in words is "one trillion, three hundred twenty-one billion, seven hundred forty-seven million, six hundred thirty-four thousand, seven hundred forty-six".