1252761199966 has 16 divisors (see below), whose sum is σ = 1884683279808. Its totient is φ = 624535984800.

The previous prime is 1252761199927. The next prime is 1252761199993. The reversal of 1252761199966 is 6699911672521.

It is a junction number, because it is equal to n+sod(n) for n = 1252761199898 and 1252761199907.

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, 350236 + ... + 1621168.

It is an arithmetic number, because the mean of its divisors is an integer number (117792704988).

Almost surely, 2^{1252761199966} is an apocalyptic number.

1252761199966 is a deficient number, since it is larger than the sum of its proper divisors (631922079842).

1252761199966 is a wasteful number, since it uses less digits than its factorization.

1252761199966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272387.

The product of its digits is 22044960, while the sum is 64.

The spelling of 1252761199966 in words is "one trillion, two hundred fifty-two billion, seven hundred sixty-one million, one hundred ninety-nine thousand, nine hundred sixty-six".