1043740400091 has 32 divisors (see below), whose sum is σ = 1524475676160. Its totient is φ = 632251544064.

The previous prime is 1043740400081. The next prime is 1043740400113. The reversal of 1043740400091 is 1900040473401.

It is not a de Polignac number, because 1043740400091 - 2¹³ = 1043740391899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1043740400011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18463716 + ... + 18520158.

It is an arithmetic number, because the mean of its divisors is an integer number (47639864880).

Almost surely, 2^{1043740400091} is an apocalyptic number.

1043740400091 is a deficient number, since it is larger than the sum of its proper divisors (480735276069).

1043740400091 is a wasteful number, since it uses less digits than its factorization.

1043740400091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68995.

The product of its (nonzero) digits is 12096, while the sum is 33.

Adding to 1043740400091 its reverse (1900040473401), we get a palindrome (2943780873492).

The spelling of 1043740400091 in words is "one trillion, forty-three billion, seven hundred forty million, four hundred thousand, ninety-one".