40621105247 has 4 divisors (see below), whose sum is σ = 40659105480. Its totient is φ = 40583105016.

The previous prime is 40621105211. The next prime is 40621105303. The reversal of 40621105247 is 74250112604.

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 40621105247 - 2⁸ = 40621104991 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 (40621108247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18998513 + ... + 19000650.

It is an arithmetic number, because the mean of its divisors is an integer number (10164776370).

Almost surely, 2^40621105247 is an apocalyptic number.

40621105247 is a deficient number, since it is larger than the sum of its proper divisors (38000233).

40621105247 is a wasteful number, since it uses less digits than its factorization.

40621105247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38000232.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 40621105247 in words is "forty billion, six hundred twenty-one million, one hundred five thousand, two hundred forty-seven".