3815610628866 has 8 divisors (see below), whose sum is σ = 7631221257744. Its totient is φ = 1271870209620.

The previous prime is 3815610628853. The next prime is 3815610628871. The reversal of 3815610628866 is 6688260165183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

3815610628866 is an admirable number.

It is a super-2 number, since 2×3815610628866² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317967552400 + ... + 317967552411.

It is an arithmetic number, because the mean of its divisors is an integer number (953902657218).

Almost surely, 2^{3815610628866} is an apocalyptic number.

3815610628866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3815610628866 is a wasteful number, since it uses less digits than its factorization.

3815610628866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635935104816.

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 3815610628866 in words is "three trillion, eight hundred fifteen billion, six hundred ten million, six hundred twenty-eight thousand, eight hundred sixty-six".