1023115435020 has 96 divisors (see below), whose sum is σ = 3637743782400. Its totient is φ = 233854955712.

The previous prime is 1023115435019. The next prime is 1023115435039. The reversal of 1023115435020 is 205345113201.

1023115435020 is a `hidden beast` number, since 1 + 0 + 2 + 3 + 1 + 154 + 3 + 502 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135328950 + ... + 135336509.

It is an arithmetic number, because the mean of its divisors is an integer number (37893164400).

Almost surely, 2^{1023115435020} is an apocalyptic number.

1023115435020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023115435020 is an abundant number, since it is smaller than the sum of its proper divisors (2614628347380).

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

1023115435020 is a wasteful number, since it uses less digits than its factorization.

1023115435020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270665484 (or 270665476 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 1023115435020 in words is "one trillion, twenty-three billion, one hundred fifteen million, four hundred thirty-five thousand, twenty".