40420564636 has 6 divisors (see below), whose sum is σ = 70735988120. Its totient is φ = 20210282316.

The previous prime is 40420564621. The next prime is 40420564651. The reversal of 40420564636 is 63646502404.

It is an interprime number because it is at equal distance from previous prime (40420564621) and next prime (40420564651).

It is a congruent number.

It is an unprimeable number.

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, 5052570576 + ... + 5052570583.

Almost surely, 2^40420564636 is an apocalyptic number.

It is an amenable number.

40420564636 is a deficient number, since it is larger than the sum of its proper divisors (30315423484).

40420564636 is a wasteful number, since it uses less digits than its factorization.

40420564636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105141163 (or 10105141161 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 40420564636 in words is "forty billion, four hundred twenty million, five hundred sixty-four thousand, six hundred thirty-six".