11802786457 has 24 divisors (see below), whose sum is σ = 15461114112. Its totient is φ = 8900287200.

The previous prime is 11802786451. The next prime is 11802786533. The reversal of 11802786457 is 75468720811.

11802786457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11802786457 - 2¹⁹ = 11802262169 is a prime.

It is a super-2 number, since 2×11802786457² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11802786457.

It is not an unprimeable number, because it can be changed into a prime (11802786451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336478 + ... + 369895.

It is an arithmetic number, because the mean of its divisors is an integer number (644213088).

Almost surely, 2^11802786457 is an apocalyptic number.

It is an amenable number.

11802786457 is a deficient number, since it is larger than the sum of its proper divisors (3658327655).

11802786457 is a wasteful number, since it uses less digits than its factorization.

11802786457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706429 (or 706422 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 11802786457 in words is "eleven billion, eight hundred two million, seven hundred eighty-six thousand, four hundred fifty-seven".