40370012462161 has 2 divisors, whose sum is σ = 40370012462162. Its totient is φ = 40370012462160.

The previous prime is 40370012462159. The next prime is 40370012462251. The reversal of 40370012462161 is 16126421007304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40367839037761 + 2173424400 = 6353569^2 + 46620^2 .

It is a cyclic number.

It is not a de Polignac number, because 40370012462161 - 2¹ = 40370012462159 is a prime.

Together with 40370012462159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40370012462161.

It is not a weakly prime, because it can be changed into another prime (40370012462861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20185006231080 + 20185006231081.

It is an arithmetic number, because the mean of its divisors is an integer number (20185006231081).

Almost surely, 2^{40370012462161} is an apocalyptic number.

It is an amenable number.

40370012462161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40370012462161 is an equidigital number, since it uses as much as digits as its factorization.

40370012462161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 40370012462161 its reverse (16126421007304), we get a palindrome (56496433469465).

The spelling of 40370012462161 in words is "forty trillion, three hundred seventy billion, twelve million, four hundred sixty-two thousand, one hundred sixty-one".