401646101606 has 4 divisors (see below), whose sum is σ = 602469152412. Its totient is φ = 200823050802.

The previous prime is 401646101603. The next prime is 401646101653. The reversal of 401646101606 is 606101646104.

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

It is a super-2 number, since 2×401646101606² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401646101603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100411525400 + ... + 100411525403.

It is an arithmetic number, because the mean of its divisors is an integer number (150617288103).

Almost surely, 2^401646101606 is an apocalyptic number.

401646101606 is a deficient number, since it is larger than the sum of its proper divisors (200823050806).

401646101606 is a wasteful number, since it uses less digits than its factorization.

401646101606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200823050805.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 401646101606 in words is "four hundred one billion, six hundred forty-six million, one hundred one thousand, six hundred six".