40612036632421 has 4 divisors (see below), whose sum is σ = 40624613915500. Its totient is φ = 40599459349344.

The previous prime is 40612036632403. The next prime is 40612036632437. The reversal of 40612036632421 is 12423663021604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17079457252900 + 23532579379521 = 4132730^2 + 4851039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40612036632421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40612036638421) 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, 6288636696 + ... + 6288643153.

It is an arithmetic number, because the mean of its divisors is an integer number (10156153478875).

Almost surely, 2^{40612036632421} is an apocalyptic number.

It is an amenable number.

40612036632421 is a deficient number, since it is larger than the sum of its proper divisors (12577283079).

40612036632421 is a wasteful number, since it uses less digits than its factorization.

40612036632421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577283078.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 40612036632421 in words is "forty trillion, six hundred twelve billion, thirty-six million, six hundred thirty-two thousand, four hundred twenty-one".