406881377281 has 8 divisors (see below), whose sum is σ = 414614559744. Its totient is φ = 399206558880.

The previous prime is 406881377269. The next prime is 406881377291. The reversal of 406881377281 is 182773188604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406881377281 - 2⁷ = 406881377153 is a prime.

It is a super-2 number, since 2×406881377281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406881377291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14576941 + ... + 14604826.

It is an arithmetic number, because the mean of its divisors is an integer number (51826819968).

Almost surely, 2^406881377281 is an apocalyptic number.

It is an amenable number.

406881377281 is a deficient number, since it is larger than the sum of its proper divisors (7733182463).

406881377281 is a wasteful number, since it uses less digits than its factorization.

406881377281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29182031.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 406881377281 in words is "four hundred six billion, eight hundred eighty-one million, three hundred seventy-seven thousand, two hundred eighty-one".