1268377740040 has 64 divisors (see below), whose sum is σ = 3077322192000. Its totient is φ = 468925263360.

The previous prime is 1268377740037. The next prime is 1268377740041. The reversal of 1268377740040 is 400477738621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1268377740041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20321500 + ... + 20383819.

It is an arithmetic number, because the mean of its divisors is an integer number (48083159250).

Almost surely, 2^{1268377740040} is an apocalyptic number.

1268377740040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268377740040 is an abundant number, since it is smaller than the sum of its proper divisors (1808944451960).

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

1268377740040 is a wasteful number, since it uses less digits than its factorization.

1268377740040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40705390 (or 40705386 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 1268377740040 in words is "one trillion, two hundred sixty-eight billion, three hundred seventy-seven million, seven hundred forty thousand, forty".