1240798264864 has 12 divisors (see below), whose sum is σ = 2442821584014. Its totient is φ = 620399132416.

The previous prime is 1240798264841. The next prime is 1240798264877. The reversal of 1240798264864 is 4684628970421.

It can be written as a sum of positive squares in only one way, i.e., 710493896464 + 530304368400 = 842908^2 + 728220^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19387472857 + ... + 19387472920.

Almost surely, 2^{1240798264864} is an apocalyptic number.

It is an amenable number.

1240798264864 is a deficient number, since it is larger than the sum of its proper divisors (1202023319150).

1240798264864 is an equidigital number, since it uses as much as digits as its factorization.

1240798264864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38774945787 (or 38774945779 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 1240798264864 in words is "one trillion, two hundred forty billion, seven hundred ninety-eight million, two hundred sixty-four thousand, eight hundred sixty-four".