40946894137 has 2 divisors, whose sum is σ = 40946894138. Its totient is φ = 40946894136.

The previous prime is 40946894101. The next prime is 40946894231. The reversal of 40946894137 is 73149864904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40741000336 + 205893801 = 201844^2 + 14349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40946894137 is a prime.

It is not a weakly prime, because it can be changed into another prime (40946894837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20473447068 + 20473447069.

It is an arithmetic number, because the mean of its divisors is an integer number (20473447069).

Almost surely, 2^40946894137 is an apocalyptic number.

It is an amenable number.

40946894137 is a deficient number, since it is larger than the sum of its proper divisors (1).

40946894137 is an equidigital number, since it uses as much as digits as its factorization.

40946894137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 40946894137 in words is "forty billion, nine hundred forty-six million, eight hundred ninety-four thousand, one hundred thirty-seven".