40641566426 has 32 divisors (see below), whose sum is σ = 64773872640. Its totient is φ = 19058754816.

The previous prime is 40641566419. The next prime is 40641566461. The reversal of 40641566426 is 62466514604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16235891 + ... + 16238393.

It is an arithmetic number, because the mean of its divisors is an integer number (2024183520).

Almost surely, 2^40641566426 is an apocalyptic number.

40641566426 is a deficient number, since it is larger than the sum of its proper divisors (24132306214).

40641566426 is a wasteful number, since it uses less digits than its factorization.

40641566426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 40641566426 in words is "forty billion, six hundred forty-one million, five hundred sixty-six thousand, four hundred twenty-six".