1262915265140 has 12 divisors (see below), whose sum is σ = 2652122056836. Its totient is φ = 505166106048.

The previous prime is 1262915265127. The next prime is 1262915265169. The reversal of 1262915265140 is 415625192621.

It can be written as a sum of positive squares in 2 ways, for example, as 287079496804 + 975835768336 = 535798^2 + 987844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1262915265091 and 1262915265100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31572881609 + ... + 31572881648.

It is an arithmetic number, because the mean of its divisors is an integer number (221010171403).

Almost surely, 2^{1262915265140} is an apocalyptic number.

1262915265140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262915265140 is an abundant number, since it is smaller than the sum of its proper divisors (1389206791696).

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

1262915265140 is a wasteful number, since it uses less digits than its factorization.

1262915265140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63145763266 (or 63145763264 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 1262915265140 in words is "one trillion, two hundred sixty-two billion, nine hundred fifteen million, two hundred sixty-five thousand, one hundred forty".