43710542803721 has 2 divisors, whose sum is σ = 43710542803722. Its totient is φ = 43710542803720.

The previous prime is 43710542803717. The next prime is 43710542803787. The reversal of 43710542803721 is 12730824501734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36394253545225 + 7316289258496 = 6032765^2 + 2704864^2 .

It is a cyclic number.

It is not a de Polignac number, because 43710542803721 - 2² = 43710542803717 is a prime.

It is a super-2 number, since 2×43710542803721² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43710542103721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21855271401860 + 21855271401861.

It is an arithmetic number, because the mean of its divisors is an integer number (21855271401861).

Almost surely, 2^{43710542803721} is an apocalyptic number.

It is an amenable number.

43710542803721 is a deficient number, since it is larger than the sum of its proper divisors (1).

43710542803721 is an equidigital number, since it uses as much as digits as its factorization.

43710542803721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 43710542803721 in words is "forty-three trillion, seven hundred ten billion, five hundred forty-two million, eight hundred three thousand, seven hundred twenty-one".