1263869703940 has 48 divisors (see below), whose sum is σ = 2719178792064. Its totient is φ = 493159827200.

The previous prime is 1263869703913. The next prime is 1263869703949. The reversal of 1263869703940 is 493079683621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1263869703949) 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, 7303497 + ... + 7474543.

It is an arithmetic number, because the mean of its divisors is an integer number (56649558168).

Almost surely, 2^{1263869703940} is an apocalyptic number.

1263869703940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263869703940 is an abundant number, since it is smaller than the sum of its proper divisors (1455309088124).

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

1263869703940 is a wasteful number, since it uses less digits than its factorization.

1263869703940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180108 (or 180106 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 1263869703940 in words is "one trillion, two hundred sixty-three billion, eight hundred sixty-nine million, seven hundred three thousand, nine hundred forty".