43137177831061 has 2 divisors, whose sum is σ = 43137177831062. Its totient is φ = 43137177831060.

The previous prime is 43137177831049. The next prime is 43137177831197. The reversal of 43137177831061 is 16013877173134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24349339595025 + 18787838236036 = 4934505^2 + 4334494^2 .

It is a cyclic number.

It is not a de Polignac number, because 43137177831061 - 2⁷ = 43137177830933 is a prime.

It is a super-2 number, since 2×43137177831061² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43137177831661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21568588915530 + 21568588915531.

It is an arithmetic number, because the mean of its divisors is an integer number (21568588915531).

Almost surely, 2^{43137177831061} is an apocalyptic number.

It is an amenable number.

43137177831061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43137177831061 is an equidigital number, since it uses as much as digits as its factorization.

43137177831061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 43137177831061 in words is "forty-three trillion, one hundred thirty-seven billion, one hundred seventy-seven million, eight hundred thirty-one thousand, sixty-one".