405531217342 has 4 divisors (see below), whose sum is σ = 608296826016. Its totient is φ = 202765608670.

The previous prime is 405531217277. The next prime is 405531217367. The reversal of 405531217342 is 243712135504.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101382804334 + ... + 101382804337.

It is an arithmetic number, because the mean of its divisors is an integer number (152074206504).

Almost surely, 2^405531217342 is an apocalyptic number.

405531217342 is a deficient number, since it is larger than the sum of its proper divisors (202765608674).

405531217342 is a wasteful number, since it uses less digits than its factorization.

405531217342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202765608673.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 405531217342 in words is "four hundred five billion, five hundred thirty-one million, two hundred seventeen thousand, three hundred forty-two".