40871987953 has 2 divisors, whose sum is σ = 40871987954. Its totient is φ = 40871987952.

The previous prime is 40871987941. The next prime is 40871987971. The reversal of 40871987953 is 35978917804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26527614129 + 14344373824 = 162873^2 + 119768^2 .

It is a cyclic number.

It is not a de Polignac number, because 40871987953 - 2¹⁷ = 40871856881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40871987891 and 40871987900.

It is not a weakly prime, because it can be changed into another prime (40871957953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20435993976 + 20435993977.

It is an arithmetic number, because the mean of its divisors is an integer number (20435993977).

Almost surely, 2^40871987953 is an apocalyptic number.

It is an amenable number.

40871987953 is a deficient number, since it is larger than the sum of its proper divisors (1).

40871987953 is an equidigital number, since it uses as much as digits as its factorization.

40871987953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 40871987953 in words is "forty billion, eight hundred seventy-one million, nine hundred eighty-seven thousand, nine hundred fifty-three".