1015205133420 has 36 divisors (see below), whose sum is σ = 3079455571920. Its totient is φ = 270721368864.

The previous prime is 1015205133419. The next prime is 1015205133461. The reversal of 1015205133420 is 243315025101.

1015205133420 is a `hidden beast` number, since 1 + 0 + 1 + 5 + 205 + 1 + 33 + 420 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2820014080 + ... + 2820014439.

Almost surely, 2^{1015205133420} is an apocalyptic number.

1015205133420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015205133420 is an abundant number, since it is smaller than the sum of its proper divisors (2064250438500).

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

1015205133420 is a wasteful number, since it uses less digits than its factorization.

1015205133420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640028534 (or 5640028529 counting only the distinct ones).

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

The spelling of 1015205133420 in words is "one trillion, fifteen billion, two hundred five million, one hundred thirty-three thousand, four hundred twenty".