40106064816557 has 4 divisors (see below), whose sum is σ = 40398809815356. Its totient is φ = 39813319817760.

The previous prime is 40106064816529. The next prime is 40106064816589. The reversal of 40106064816557 is 75561846060104.

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 26258593970596 + 13847470845961 = 5124314^2 + 3721219^2 .

It is a cyclic number.

It is not a de Polignac number, because 40106064816557 - 2¹² = 40106064812461 is a prime.

It is a super-2 number, since 2×40106064816557² (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 = 40106064816499 and 40106064816508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40106064818557) 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, 146372499194 + ... + 146372499467.

It is an arithmetic number, because the mean of its divisors is an integer number (10099702453839).

Almost surely, 2^{40106064816557} is an apocalyptic number.

It is an amenable number.

40106064816557 is a deficient number, since it is larger than the sum of its proper divisors (292744998799).

40106064816557 is a wasteful number, since it uses less digits than its factorization.

40106064816557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292744998798.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 40106064816557 in words is "forty trillion, one hundred six billion, sixty-four million, eight hundred sixteen thousand, five hundred fifty-seven".