43897097138371 has 2 divisors, whose sum is σ = 43897097138372. Its totient is φ = 43897097138370.

The previous prime is 43897097138357. The next prime is 43897097138437. The reversal of 43897097138371 is 17383179079834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43897097138371 - 2⁵ = 43897097138339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43897097138371.

It is not a weakly prime, because it can be changed into another prime (43897097138351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21948548569185 + 21948548569186.

It is an arithmetic number, because the mean of its divisors is an integer number (21948548569186).

Almost surely, 2^{43897097138371} is an apocalyptic number.

43897097138371 is a deficient number, since it is larger than the sum of its proper divisors (1).

43897097138371 is an equidigital number, since it uses as much as digits as its factorization.

43897097138371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192036096, while the sum is 70.

The spelling of 43897097138371 in words is "forty-three trillion, eight hundred ninety-seven billion, ninety-seven million, one hundred thirty-eight thousand, three hundred seventy-one".