1002457660220 has 96 divisors (see below), whose sum is σ = 2243701736640. Its totient is φ = 374913536000.

The previous prime is 1002457660219. The next prime is 1002457660231. The reversal of 1002457660220 is 220667542001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33182162 + ... + 33212358.

It is an arithmetic number, because the mean of its divisors is an integer number (23371893090).

Almost surely, 2^{1002457660220} is an apocalyptic number.

1002457660220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002457660220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121850868320).

1002457660220 is an abundant number, since it is smaller than the sum of its proper divisors (1241244076420).

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

1002457660220 is a wasteful number, since it uses less digits than its factorization.

1002457660220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30863 (or 30861 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 1002457660220 in words is "one trillion, two billion, four hundred fifty-seven million, six hundred sixty thousand, two hundred twenty".