1262063252561 has 8 divisors (see below), whose sum is σ = 1274729951040. Its totient is φ = 1249404509232.

The previous prime is 1262063252543. The next prime is 1262063252617. The reversal of 1262063252561 is 1652523602621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1262063252561 - 2²² = 1262059058257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1262063252861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669646 + ... + 2304743.

It is an arithmetic number, because the mean of its divisors is an integer number (159341243880).

Almost surely, 2^{1262063252561} is an apocalyptic number.

It is an amenable number.

1262063252561 is a deficient number, since it is larger than the sum of its proper divisors (12666698479).

1262063252561 is a wasteful number, since it uses less digits than its factorization.

1262063252561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977575.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1262063252561 in words is "one trillion, two hundred sixty-two billion, sixty-three million, two hundred fifty-two thousand, five hundred sixty-one".