1154817405966 has 32 divisors (see below), whose sum is σ = 2724730472448. Its totient is φ = 319304351520.

The previous prime is 1154817405899. The next prime is 1154817405967. The reversal of 1154817405966 is 6695047184511.

It is a super-2 number, since 2×1154817405966² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154817405967) 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, 443476965 + ... + 443479568.

It is an arithmetic number, because the mean of its divisors is an integer number (85147827264).

Almost surely, 2^{1154817405966} is an apocalyptic number.

1154817405966 is an abundant number, since it is smaller than the sum of its proper divisors (1569913066482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154817405966 is a wasteful number, since it uses less digits than its factorization.

1154817405966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886956576.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 1154817405966 in words is "one trillion, one hundred fifty-four billion, eight hundred seventeen million, four hundred five thousand, nine hundred sixty-six".