1016433987856 has 20 divisors (see below), whose sum is σ = 2250675259072. Its totient is φ = 435614566176.

The previous prime is 1016433987851. The next prime is 1016433987913. The reversal of 1016433987856 is 6587893346101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1016433987794 and 1016433987803.

It is not an unprimeable number, because it can be changed into a prime (1016433987851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4537651620 + ... + 4537651843.

Almost surely, 2^{1016433987856} is an apocalyptic number.

1016433987856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1016433987856 is an abundant number, since it is smaller than the sum of its proper divisors (1234241271216).

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

1016433987856 is an equidigital number, since it uses as much as digits as its factorization.

1016433987856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9075303478 (or 9075303472 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 1016433987856 in words is "one trillion, sixteen billion, four hundred thirty-three million, nine hundred eighty-seven thousand, eight hundred fifty-six".