1269115623887 has 16 divisors (see below), whose sum is σ = 1358859801600. Its totient is φ = 1182350769600.

The previous prime is 1269115623883. The next prime is 1269115623913. The reversal of 1269115623887 is 7883265119621.

It is not a de Polignac number, because 1269115623887 - 2² = 1269115623883 is a prime.

It is a super-2 number, since 2×1269115623887² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269115623883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558539 + ... + 1688252.

It is an arithmetic number, because the mean of its divisors is an integer number (84928737600).

Almost surely, 2^{1269115623887} is an apocalyptic number.

1269115623887 is a deficient number, since it is larger than the sum of its proper divisors (89744177713).

1269115623887 is a wasteful number, since it uses less digits than its factorization.

1269115623887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247454.

The product of its digits is 8709120, while the sum is 59.

The spelling of 1269115623887 in words is "one trillion, two hundred sixty-nine billion, one hundred fifteen million, six hundred twenty-three thousand, eight hundred eighty-seven".