12767453820 has 96 divisors (see below), whose sum is σ = 43331984640. Its totient is φ = 3095138880.

The previous prime is 12767453813. The next prime is 12767453827. The reversal of 12767453820 is 2835476721.

12767453820 is a `hidden beast` number, since 1 + 27 + 6 + 74 + 538 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (12767453813) and next prime (12767453827).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12767453827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068762 + ... + 1080641.

It is an arithmetic number, because the mean of its divisors is an integer number (451374840).

Almost surely, 2^12767453820 is an apocalyptic number.

12767453820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12767453820 is an abundant number, since it is smaller than the sum of its proper divisors (30564530820).

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

12767453820 is a wasteful number, since it uses less digits than its factorization.

12767453820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149432 (or 2149424 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 12767453820 in words is "twelve billion, seven hundred sixty-seven million, four hundred fifty-three thousand, eight hundred twenty".