1263196946240 has 56 divisors (see below), whose sum is σ = 3184928196552. Its totient is φ = 475556495360.

The previous prime is 1263196946239. The next prime is 1263196946251. The reversal of 1263196946240 is 426496913621.

It can be written as a sum of positive squares in 4 ways, for example, as 21416566336 + 1241780379904 = 146344^2 + 1114352^2 .

It is a super-2 number, since 2×1263196946240² (a number of 25 digits) contains 22 as substring.

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, 116097221 + ... + 116108100.

Almost surely, 2^{1263196946240} is an apocalyptic number.

1263196946240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263196946240 is an abundant number, since it is smaller than the sum of its proper divisors (1921731250312).

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

1263196946240 is a wasteful number, since it uses less digits than its factorization.

1263196946240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232205355 (or 232205345 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 1263196946240 in words is "one trillion, two hundred sixty-three billion, one hundred ninety-six million, nine hundred forty-six thousand, two hundred forty".