40873856852215 has 4 divisors (see below), whose sum is σ = 49048628222664. Its totient is φ = 32699085481768.

The previous prime is 40873856852077. The next prime is 40873856852221. The reversal of 40873856852215 is 51225865837804.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40873856852215 - 2²⁷ = 40873722634487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4087385685217 + ... + 4087385685226.

It is an arithmetic number, because the mean of its divisors is an integer number (12262157055666).

Almost surely, 2^{40873856852215} is an apocalyptic number.

40873856852215 is a deficient number, since it is larger than the sum of its proper divisors (8174771370449).

40873856852215 is an equidigital number, since it uses as much as digits as its factorization.

40873856852215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174771370448.

The product of its (nonzero) digits is 129024000, while the sum is 64.

The spelling of 40873856852215 in words is "forty trillion, eight hundred seventy-three billion, eight hundred fifty-six million, eight hundred fifty-two thousand, two hundred fifteen".