1020905823807 has 12 divisors (see below), whose sum is σ = 1476160441704. Its totient is φ = 679902945840.

The previous prime is 1020905823757. The next prime is 1020905823827. The reversal of 1020905823807 is 7083285090201.

It is a happy number.

1020905823807 is a `hidden beast` number, since 10 + 20 + 9 + 0 + 582 + 38 + 0 + 7 = 666.

It is not a de Polignac number, because 1020905823807 - 2³⁶ = 952186347071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020905823827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58402168 + ... + 58419645.

It is an arithmetic number, because the mean of its divisors is an integer number (123013370142).

Almost surely, 2^{1020905823807} is an apocalyptic number.

1020905823807 is a deficient number, since it is larger than the sum of its proper divisors (455254617897).

1020905823807 is a wasteful number, since it uses less digits than its factorization.

1020905823807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116822790 (or 116822787 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 1020905823807 in words is "one trillion, twenty billion, nine hundred five million, eight hundred twenty-three thousand, eight hundred seven".