1264278040280 has 32 divisors (see below), whose sum is σ = 2845290142800. Its totient is φ = 505593073536.

The previous prime is 1264278040261. The next prime is 1264278040357. The reversal of 1264278040280 is 820408724621.

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, 3518495 + ... + 3861134.

Almost surely, 2^{1264278040280} is an apocalyptic number.

1264278040280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264278040280 is an abundant number, since it is smaller than the sum of its proper divisors (1581012102520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264278040280 is a wasteful number, since it uses less digits than its factorization.

1264278040280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383923 (or 7383919 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 1264278040280 in words is "one trillion, two hundred sixty-four billion, two hundred seventy-eight million, forty thousand, two hundred eighty".