40139252903 has 2 divisors, whose sum is σ = 40139252904. Its totient is φ = 40139252902.

The previous prime is 40139252899. The next prime is 40139252947. The reversal of 40139252903 is 30925293104.

It is a happy number.

40139252903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40139252903 - 2² = 40139252899 is a prime.

It is a super-2 number, since 2×40139252903² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40139252963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20069626451 + 20069626452.

It is an arithmetic number, because the mean of its divisors is an integer number (20069626452).

Almost surely, 2^40139252903 is an apocalyptic number.

40139252903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40139252903 is an equidigital number, since it uses as much as digits as its factorization.

40139252903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 40139252903 in words is "forty billion, one hundred thirty-nine million, two hundred fifty-two thousand, nine hundred three".