40961909519 has 4 divisors (see below), whose sum is σ = 41384197344. Its totient is φ = 40539621696.

The previous prime is 40961909419. The next prime is 40961909533. The reversal of 40961909519 is 91590916904.

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 40961909519 - 2²⁴ = 40945132303 is a prime.

It is a super-2 number, since 2×40961909519² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40961909579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211143767 + ... + 211143960.

It is an arithmetic number, because the mean of its divisors is an integer number (10346049336).

Almost surely, 2^40961909519 is an apocalyptic number.

40961909519 is a deficient number, since it is larger than the sum of its proper divisors (422287825).

40961909519 is an equidigital number, since it uses as much as digits as its factorization.

40961909519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422287824.

The product of its (nonzero) digits is 787320, while the sum is 53.

The spelling of 40961909519 in words is "forty billion, nine hundred sixty-one million, nine hundred nine thousand, five hundred nineteen".