40621506713 has 2 divisors, whose sum is σ = 40621506714. Its totient is φ = 40621506712.

The previous prime is 40621506707. The next prime is 40621506773. The reversal of 40621506713 is 31760512604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39542515609 + 1078991104 = 198853^2 + 32848^2 .

It is a cyclic number.

It is not a de Polignac number, because 40621506713 - 2⁴ = 40621506697 is a prime.

It is not a weakly prime, because it can be changed into another prime (40621506773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310753356 + 20310753357.

It is an arithmetic number, because the mean of its divisors is an integer number (20310753357).

Almost surely, 2^40621506713 is an apocalyptic number.

It is an amenable number.

40621506713 is a deficient number, since it is larger than the sum of its proper divisors (1).

40621506713 is an equidigital number, since it uses as much as digits as its factorization.

40621506713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 40621506713 in words is "forty billion, six hundred twenty-one million, five hundred six thousand, seven hundred thirteen".