1262515262640 has 40 divisors (see below), whose sum is σ = 3913797314928. Its totient is φ = 336670736640.

The previous prime is 1262515262633. The next prime is 1262515262651. The reversal of 1262515262640 is 462625152621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1262515262592 and 1262515262601.

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 7 ways as a sum of consecutive naturals, for example, 2630239891 + ... + 2630240370.

Almost surely, 2^{1262515262640} is an apocalyptic number.

1262515262640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262515262640 is an abundant number, since it is smaller than the sum of its proper divisors (2651282052288).

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

1262515262640 is a wasteful number, since it uses less digits than its factorization.

1262515262640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260480277 (or 5260480271 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 1262515262640 in words is "one trillion, two hundred sixty-two billion, five hundred fifteen million, two hundred sixty-two thousand, six hundred forty".