437066422376421 has 4 divisors (see below), whose sum is σ = 582755229835232. Its totient is φ = 291377614917612.

The previous prime is 437066422376371. The next prime is 437066422376461. The reversal of 437066422376421 is 124673224660734.

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 not a de Polignac number, because 437066422376421 - 2¹⁵ = 437066422343653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (437066422376461) 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, 72844403729401 + ... + 72844403729406.

It is an arithmetic number, because the mean of its divisors is an integer number (145688807458808).

Almost surely, 2^{437066422376421} is an apocalyptic number.

It is an amenable number.

437066422376421 is a deficient number, since it is larger than the sum of its proper divisors (145688807458811).

437066422376421 is a wasteful number, since it uses less digits than its factorization.

437066422376421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145688807458810.

The product of its (nonzero) digits is 48771072, while the sum is 57.

The spelling of 437066422376421 in words is "four hundred thirty-seven trillion, sixty-six billion, four hundred twenty-two million, three hundred seventy-six thousand, four hundred twenty-one".