43021226406554 has 12 divisors (see below), whose sum is σ = 70931691472362. Its totient is φ = 19555102911960.

The previous prime is 43021226406511. The next prime is 43021226406563. The reversal of 43021226406554 is 45560462212034.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32485132382329 + 10536094024225 = 5699573^2 + 3245935^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88886831177 + ... + 88886831660.

Almost surely, 2^{43021226406554} is an apocalyptic number.

43021226406554 is a deficient number, since it is larger than the sum of its proper divisors (27910465065808).

43021226406554 is a wasteful number, since it uses less digits than its factorization.

43021226406554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177773662861 (or 177773662850 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

Adding to 43021226406554 its reverse (45560462212034), we get a palindrome (88581688618588).

The spelling of 43021226406554 in words is "forty-three trillion, twenty-one billion, two hundred twenty-six million, four hundred six thousand, five hundred fifty-four".