43798731377 has 2 divisors, whose sum is σ = 43798731378. Its totient is φ = 43798731376.

The previous prime is 43798731373. The next prime is 43798731413. The reversal of 43798731377 is 77313789734.

43798731377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22117935841 + 21680795536 = 148721^2 + 147244^2 .

It is a cyclic number.

It is not a de Polignac number, because 43798731377 - 2² = 43798731373 is a prime.

It is a super-2 number, since 2×43798731377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43798731373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21899365688 + 21899365689.

It is an arithmetic number, because the mean of its divisors is an integer number (21899365689).

Almost surely, 2^43798731377 is an apocalyptic number.

It is an amenable number.

43798731377 is a deficient number, since it is larger than the sum of its proper divisors (1).

43798731377 is an equidigital number, since it uses as much as digits as its factorization.

43798731377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18670176, while the sum is 59.

The spelling of 43798731377 in words is "forty-three billion, seven hundred ninety-eight million, seven hundred thirty-one thousand, three hundred seventy-seven".