1251252776516 has 12 divisors (see below), whose sum is σ = 2189750996160. Its totient is φ = 625609634760.

The previous prime is 1251252776503. The next prime is 1251252776519. The reversal of 1251252776516 is 6156772521521.

It is not an unprimeable number, because it can be changed into a prime (1251252776519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4019576 + ... + 4319663.

It is an arithmetic number, because the mean of its divisors is an integer number (182479249680).

Almost surely, 2^{1251252776516} is an apocalyptic number.

It is an amenable number.

1251252776516 is a deficient number, since it is larger than the sum of its proper divisors (938498219644).

1251252776516 is a wasteful number, since it uses less digits than its factorization.

1251252776516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8376754 (or 8376752 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 50.

The spelling of 1251252776516 in words is "one trillion, two hundred fifty-one billion, two hundred fifty-two million, seven hundred seventy-six thousand, five hundred sixteen".