1016665020220 has 12 divisors (see below), whose sum is σ = 2134996542504. Its totient is φ = 406666008080.

The previous prime is 1016665020191. The next prime is 1016665020229. The reversal of 1016665020220 is 220205666101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016665020229) 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, 25416625486 + ... + 25416625525.

It is an arithmetic number, because the mean of its divisors is an integer number (177916378542).

Almost surely, 2^{1016665020220} is an apocalyptic number.

1016665020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016665020220 is an abundant number, since it is smaller than the sum of its proper divisors (1118331522284).

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

1016665020220 is a wasteful number, since it uses less digits than its factorization.

1016665020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50833251020 (or 50833251018 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 1016665020220 in words is "one trillion, sixteen billion, six hundred sixty-five million, twenty thousand, two hundred twenty".