40991490803 has 2 divisors, whose sum is σ = 40991490804. Its totient is φ = 40991490802.

The previous prime is 40991490791. The next prime is 40991490821. The reversal of 40991490803 is 30809419904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40991490803 - 2¹² = 40991486707 is a prime.

It is not a weakly prime, because it can be changed into another prime (40991490823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20495745401 + 20495745402.

It is an arithmetic number, because the mean of its divisors is an integer number (20495745402).

Almost surely, 2^40991490803 is an apocalyptic number.

40991490803 is a deficient number, since it is larger than the sum of its proper divisors (1).

40991490803 is an equidigital number, since it uses as much as digits as its factorization.

40991490803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 40991490803 in words is "forty billion, nine hundred ninety-one million, four hundred ninety thousand, eight hundred three".