1125578913669 has 12 divisors (see below), whose sum is σ = 1858098524256. Its totient is φ = 643187950632.

The previous prime is 1125578913643. The next prime is 1125578913703. The reversal of 1125578913669 is 9663198755211.

1125578913669 is a `hidden beast` number, since 1 + 1 + 2 + 557 + 8 + 9 + 13 + 6 + 69 = 666.

It is not a de Polignac number, because 1125578913669 - 2³¹ = 1123431430021 is a prime.

It is a super-2 number, since 2×1125578913669² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 17866331963 = 1125578913669 / (1 + 1 + 2 + 5 + 5 + 7 + 8 + 9 + 1 + 3 + 6 + 6 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125578913619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8933165919 + ... + 8933166044.

It is an arithmetic number, because the mean of its divisors is an integer number (154841543688).

Almost surely, 2^{1125578913669} is an apocalyptic number.

It is an amenable number.

1125578913669 is a deficient number, since it is larger than the sum of its proper divisors (732519610587).

1125578913669 is a wasteful number, since it uses less digits than its factorization.

1125578913669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17866331976 (or 17866331973 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The spelling of 1125578913669 in words is "one trillion, one hundred twenty-five billion, five hundred seventy-eight million, nine hundred thirteen thousand, six hundred sixty-nine".