40887883961 has 2 divisors, whose sum is σ = 40887883962. Its totient is φ = 40887883960.

The previous prime is 40887883951. The next prime is 40887884069. The reversal of 40887883961 is 16938878804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37798747561 + 3089136400 = 194419^2 + 55580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40887883961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40887883894 and 40887883903.

It is not a weakly prime, because it can be changed into another prime (40887883951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20443941980 + 20443941981.

It is an arithmetic number, because the mean of its divisors is an integer number (20443941981).

Almost surely, 2^40887883961 is an apocalyptic number.

It is an amenable number.

40887883961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40887883961 is an equidigital number, since it uses as much as digits as its factorization.

40887883961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 40887883961 in words is "forty billion, eight hundred eighty-seven million, eight hundred eighty-three thousand, nine hundred sixty-one".