920565401539 has 6 divisors (see below), whose sum is σ = 1070861793684. Its totient is φ = 789056058420.

The previous prime is 920565401501. The next prime is 920565401557. The reversal of 920565401539 is 935104565029.

It is not a de Polignac number, because 920565401539 - 2¹⁹ = 920564877251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 18787049011 = 920565401539 / (9 + 2 + 0 + 5 + 6 + 5 + 4 + 0 + 1 + 5 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920565401492 and 920565401501.

It is not an unprimeable number, because it can be changed into a prime (920565401599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9393524457 + ... + 9393524554.

It is an arithmetic number, because the mean of its divisors is an integer number (178476965614).

Almost surely, 2^920565401539 is an apocalyptic number.

920565401539 is a deficient number, since it is larger than the sum of its proper divisors (150296392145).

920565401539 is a wasteful number, since it uses less digits than its factorization.

920565401539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18787049025 (or 18787049018 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 49.

The spelling of 920565401539 in words is "nine hundred twenty billion, five hundred sixty-five million, four hundred one thousand, five hundred thirty-nine".