43021226406556 has 24 divisors (see below), whose sum is σ = 75861936339840. Its totient is φ = 21346876950000.

The previous prime is 43021226406511. The next prime is 43021226406563. The reversal of 43021226406556 is 65560462212034.

It is a super-2 number, since 2×43021226406556² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60835320 + ... + 61538431.

It is an arithmetic number, because the mean of its divisors is an integer number (3160914014160).

Almost surely, 2^{43021226406556} is an apocalyptic number.

It is an amenable number.

43021226406556 is a deficient number, since it is larger than the sum of its proper divisors (32840709933284).

43021226406556 is a wasteful number, since it uses less digits than its factorization.

43021226406556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122374425 (or 122374423 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 43021226406556 in words is "forty-three trillion, twenty-one billion, two hundred twenty-six million, four hundred six thousand, five hundred fifty-six".