396978851630 has 64 divisors (see below), whose sum is σ = 755708728320. Its totient is φ = 149727916800.

The previous prime is 396978851627. The next prime is 396978851641. The reversal of 396978851630 is 36158879693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42953810 + ... + 42963050.

It is an arithmetic number, because the mean of its divisors is an integer number (11807948880).

Almost surely, 2^396978851630 is an apocalyptic number.

396978851630 is a deficient number, since it is larger than the sum of its proper divisors (358729876690).

396978851630 is a wasteful number, since it uses less digits than its factorization.

396978851630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 396978851630 in words is "three hundred ninety-six billion, nine hundred seventy-eight million, eight hundred fifty-one thousand, six hundred thirty".