11859878451069 has 48 divisors (see below), whose sum is σ = 19314724542400. Its totient is φ = 7187047354080.

The previous prime is 11859878451061. The next prime is 11859878451097. The reversal of 11859878451069 is 96015487895811.

11859878451069 is a `hidden beast` number, since 1 + 1 + 85 + 98 + 7 + 8 + 451 + 0 + 6 + 9 = 666.

It is not a de Polignac number, because 11859878451069 - 2³ = 11859878451061 is a prime.

It is a super-2 number, since 2×11859878451069² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11859878450988 and 11859878451006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11859878451061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31611222 + ... + 31984200.

Almost surely, 2^{11859878451069} is an apocalyptic number.

It is an amenable number.

11859878451069 is a deficient number, since it is larger than the sum of its proper divisors (7454846091331).

11859878451069 is a wasteful number, since it uses less digits than its factorization.

11859878451069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382743 (or 382726 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 72.

The spelling of 11859878451069 in words is "eleven trillion, eight hundred fifty-nine billion, eight hundred seventy-eight million, four hundred fifty-one thousand, sixty-nine".