1020427865501 has 8 divisors (see below), whose sum is σ = 1117851753600. Its totient is φ = 923780263840.

The previous prime is 1020427865477. The next prime is 1020427865549. The reversal of 1020427865501 is 1055687240201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020427865501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020427855501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194068856 + ... + 194074113.

It is an arithmetic number, because the mean of its divisors is an integer number (139731469200).

Almost surely, 2^{1020427865501} is an apocalyptic number.

1020427865501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020427865501 is a deficient number, since it is larger than the sum of its proper divisors (97423888099).

1020427865501 is a wasteful number, since it uses less digits than its factorization.

1020427865501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388143219.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 1020427865501 in words is "one trillion, twenty billion, four hundred twenty-seven million, eight hundred sixty-five thousand, five hundred one".