40108620723547 has 4 divisors (see below), whose sum is σ = 40109169230640. Its totient is φ = 40108072216456.

The previous prime is 40108620723541. The next prime is 40108620723559. The reversal of 40108620723547 is 74532702680104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40108620723547 is a prime.

It is a super-2 number, since 2×40108620723547² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40108620723547.

It is not an unprimeable number, because it can be changed into a prime (40108620723541) 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, 274143847 + ... + 274290112.

It is an arithmetic number, because the mean of its divisors is an integer number (10027292307660).

Almost surely, 2^{40108620723547} is an apocalyptic number.

40108620723547 is a deficient number, since it is larger than the sum of its proper divisors (548507093).

40108620723547 is an equidigital number, since it uses as much as digits as its factorization.

40108620723547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548507092.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 40108620723547 in words is "forty trillion, one hundred eight billion, six hundred twenty million, seven hundred twenty-three thousand, five hundred forty-seven".