1020236525541 has 80 divisors (see below), whose sum is σ = 1617295680000. Its totient is φ = 639137114784.

The previous prime is 1020236525531. The next prime is 1020236525557. The reversal of 1020236525541 is 1455256320201.

1020236525541 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 2 + 365 + 255 + 41 = 666.

It is not a de Polignac number, because 1020236525541 - 2³⁵ = 985876787173 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1020236525496 and 1020236525505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020236525501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 436183750 + ... + 436186088.

It is an arithmetic number, because the mean of its divisors is an integer number (20216196000).

Almost surely, 2^{1020236525541} is an apocalyptic number.

It is an amenable number.

1020236525541 is a deficient number, since it is larger than the sum of its proper divisors (597059154459).

1020236525541 is a wasteful number, since it uses less digits than its factorization.

1020236525541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 1020236525541 in words is "one trillion, twenty billion, two hundred thirty-six million, five hundred twenty-five thousand, five hundred forty-one".