40467447356561 has 4 divisors (see below), whose sum is σ = 41772848884224. Its totient is φ = 39162045828900.

The previous prime is 40467447356551. The next prime is 40467447356569. The reversal of 40467447356561 is 16565374476404.

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 a de Polignac number, because none of the positive numbers 2^k-40467447356561 is a prime.

It is a super-2 number, since 2×40467447356561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40467447356494 and 40467447356503.

It is not an unprimeable number, because it can be changed into a prime (40467447356569) 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, 652700763785 + ... + 652700763846.

It is an arithmetic number, because the mean of its divisors is an integer number (10443212221056).

Almost surely, 2^{40467447356561} is an apocalyptic number.

It is an amenable number.

40467447356561 is a deficient number, since it is larger than the sum of its proper divisors (1305401527663).

40467447356561 is a wasteful number, since it uses less digits than its factorization.

40467447356561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305401527662.

The product of its (nonzero) digits is 203212800, while the sum is 62.

The spelling of 40467447356561 in words is "forty trillion, four hundred sixty-seven billion, four hundred forty-seven million, three hundred fifty-six thousand, five hundred sixty-one".