12816396642 has 16 divisors (see below), whose sum is σ = 29294620992. Its totient is φ = 3661827600.

The previous prime is 12816396631. The next prime is 12816396653. The reversal of 12816396642 is 24669361821.

It is an interprime number because it is at equal distance from previous prime (12816396631) and next prime (12816396653).

It is a junction number, because it is equal to n+sod(n) for n = 12816396591 and 12816396600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152576109 + ... + 152576192.

It is an arithmetic number, because the mean of its divisors is an integer number (1830913812).

Almost surely, 2^12816396642 is an apocalyptic number.

12816396642 is an abundant number, since it is smaller than the sum of its proper divisors (16478224350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12816396642 is a wasteful number, since it uses less digits than its factorization.

12816396642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305152313.

The product of its digits is 746496, while the sum is 48.

The spelling of 12816396642 in words is "twelve billion, eight hundred sixteen million, three hundred ninety-six thousand, six hundred forty-two".