40347662046521 has 4 divisors (see below), whose sum is σ = 40347865161600. Its totient is φ = 40347458931444.

The previous prime is 40347662046481. The next prime is 40347662046557. The reversal of 40347662046521 is 12564026674304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40347662046521 - 2²² = 40347657852217 is a prime.

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 40347662046521.

It is not an unprimeable number, because it can be changed into a prime (40347662046121) 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, 101259281 + ... + 101656958.

It is an arithmetic number, because the mean of its divisors is an integer number (10086966290400).

Almost surely, 2^{40347662046521} is an apocalyptic number.

It is an amenable number.

40347662046521 is a deficient number, since it is larger than the sum of its proper divisors (203115079).

40347662046521 is a wasteful number, since it uses less digits than its factorization.

40347662046521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203115078.

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 40347662046521 in words is "forty trillion, three hundred forty-seven billion, six hundred sixty-two million, forty-six thousand, five hundred twenty-one".