401232501226646 has 32 divisors (see below), whose sum is σ = 632024394343200. Its totient is φ = 190786959820800.

The previous prime is 401232501226639. The next prime is 401232501226717. The reversal of 401232501226646 is 646622105232104.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401232501226597 and 401232501226606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176312636 + ... + 178573823.

It is an arithmetic number, because the mean of its divisors is an integer number (19750762323225).

Almost surely, 2^{401232501226646} is an apocalyptic number.

401232501226646 is a deficient number, since it is larger than the sum of its proper divisors (230791893116554).

401232501226646 is a wasteful number, since it uses less digits than its factorization.

401232501226646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354886784.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 401232501226646 in words is "four hundred one trillion, two hundred thirty-two billion, five hundred one million, two hundred twenty-six thousand, six hundred forty-six".