1272878699257 has 8 divisors (see below), whose sum is σ = 1392220523520. Its totient is φ = 1154141138160.

The previous prime is 1272878699233. The next prime is 1272878699291. The reversal of 1272878699257 is 7529968782721.

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 1272878699257 - 2³¹ = 1270731215609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272878699257.

It is not an unprimeable number, because it can be changed into a prime (1272878699357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151061382 + ... + 151069807.

It is an arithmetic number, because the mean of its divisors is an integer number (174027565440).

Almost surely, 2^{1272878699257} is an apocalyptic number.

It is an amenable number.

1272878699257 is a deficient number, since it is larger than the sum of its proper divisors (119341824263).

1272878699257 is a wasteful number, since it uses less digits than its factorization.

1272878699257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302131583.

The product of its digits is 426746880, while the sum is 73.

The spelling of 1272878699257 in words is "one trillion, two hundred seventy-two billion, eight hundred seventy-eight million, six hundred ninety-nine thousand, two hundred fifty-seven".