40878949403 has 2 divisors, whose sum is σ = 40878949404. Its totient is φ = 40878949402.

The previous prime is 40878949351. The next prime is 40878949417. The reversal of 40878949403 is 30494987804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40878949403 - 2⁶ = 40878949339 is a prime.

It is not a weakly prime, because it can be changed into another prime (40878949453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20439474701 + 20439474702.

It is an arithmetic number, because the mean of its divisors is an integer number (20439474702).

Almost surely, 2^40878949403 is an apocalyptic number.

40878949403 is a deficient number, since it is larger than the sum of its proper divisors (1).

40878949403 is an equidigital number, since it uses as much as digits as its factorization.

40878949403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 40878949403 in words is "forty billion, eight hundred seventy-eight million, nine hundred forty-nine thousand, four hundred three".