1240778095678 has 16 divisors (see below), whose sum is σ = 2030394818304. Its totient is φ = 563981526360.

The previous prime is 1240778095633. The next prime is 1240778095679. The reversal of 1240778095678 is 8765908770421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240778095679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202401 + ... + 1981747.

It is an arithmetic number, because the mean of its divisors is an integer number (126899676144).

Almost surely, 2^{1240778095678} is an apocalyptic number.

1240778095678 is a deficient number, since it is larger than the sum of its proper divisors (789616722626).

1240778095678 is a wasteful number, since it uses less digits than its factorization.

1240778095678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851727.

The product of its (nonzero) digits is 47416320, while the sum is 64.

The spelling of 1240778095678 in words is "one trillion, two hundred forty billion, seven hundred seventy-eight million, ninety-five thousand, six hundred seventy-eight".