405477801641 has 4 divisors (see below), whose sum is σ = 442339419984. Its totient is φ = 368616183300.

The previous prime is 405477801607. The next prime is 405477801661. The reversal of 405477801641 is 146108774504.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405477801641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405477801601) 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, 18430809155 + ... + 18430809176.

It is an arithmetic number, because the mean of its divisors is an integer number (110584854996).

Almost surely, 2^405477801641 is an apocalyptic number.

It is an amenable number.

405477801641 is a deficient number, since it is larger than the sum of its proper divisors (36861618343).

405477801641 is a wasteful number, since it uses less digits than its factorization.

405477801641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36861618342.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 405477801641 in words is "four hundred five billion, four hundred seventy-seven million, eight hundred one thousand, six hundred forty-one".