43781077340451 has 12 divisors (see below), whose sum is σ = 68988364294200. Its totient is φ = 26533986266880.

The previous prime is 43781077340447. The next prime is 43781077340479. The reversal of 43781077340451 is 15404377018734.

43781077340451 is a `hidden beast` number, since 4 + 3 + 7 + 81 + 0 + 7 + 73 + 40 + 451 = 666.

It is not a de Polignac number, because 43781077340451 - 2² = 43781077340447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43781077340491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221116552126 + ... + 221116552323.

It is an arithmetic number, because the mean of its divisors is an integer number (5749030357850).

Almost surely, 2^{43781077340451} is an apocalyptic number.

43781077340451 is a deficient number, since it is larger than the sum of its proper divisors (25207286953749).

43781077340451 is a wasteful number, since it uses less digits than its factorization.

43781077340451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442233104466 (or 442233104463 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 43781077340451 in words is "forty-three trillion, seven hundred eighty-one billion, seventy-seven million, three hundred forty thousand, four hundred fifty-one".