40612021521343 has 4 divisors (see below), whose sum is σ = 41006312992528. Its totient is φ = 40217730050160.

The previous prime is 40612021521329. The next prime is 40612021521349. The reversal of 40612021521343 is 34312512021604.

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 40612021521343 - 2⁵ = 40612021521311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40612021521299 and 40612021521308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40612021521349) 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, 197145735438 + ... + 197145735643.

It is an arithmetic number, because the mean of its divisors is an integer number (10251578248132).

Almost surely, 2^{40612021521343} is an apocalyptic number.

40612021521343 is a deficient number, since it is larger than the sum of its proper divisors (394291471185).

40612021521343 is a wasteful number, since it uses less digits than its factorization.

40612021521343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394291471184.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 40612021521343 its reverse (34312512021604), we get a palindrome (74924533542947).

The spelling of 40612021521343 in words is "forty trillion, six hundred twelve billion, twenty-one million, five hundred twenty-one thousand, three hundred forty-three".