1129169085812 has 24 divisors (see below), whose sum is σ = 2044411156200. Its totient is φ = 545055912576.

The previous prime is 1129169085791. The next prime is 1129169085833. The reversal of 1129169085812 is 2185809619211.

It is an interprime number because it is at equal distance from previous prime (1129169085791) and next prime (1129169085833).

It can be written as a sum of positive squares in 4 ways, for example, as 80744632336 + 1048424453476 = 284156^2 + 1023926^2 .

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, 526514 + ... + 1592342.

It is an arithmetic number, because the mean of its divisors is an integer number (85183798175).

Almost surely, 2^{1129169085812} is an apocalyptic number.

It is an amenable number.

1129169085812 is a deficient number, since it is larger than the sum of its proper divisors (915242070388).

1129169085812 is a wasteful number, since it uses less digits than its factorization.

1129169085812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074995 (or 1074993 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 53.

The spelling of 1129169085812 in words is "one trillion, one hundred twenty-nine billion, one hundred sixty-nine million, eighty-five thousand, eight hundred twelve".