103065521557 has 4 divisors (see below), whose sum is σ = 103069364256. Its totient is φ = 103061678860.

The previous prime is 103065521543. The next prime is 103065521579. The reversal of 103065521557 is 755125560301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103065521557 - 2¹¹ = 103065519509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103065521957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880833 + ... + 1934854.

It is an arithmetic number, because the mean of its divisors is an integer number (25767341064).

Almost surely, 2^103065521557 is an apocalyptic number.

It is an amenable number.

103065521557 is a deficient number, since it is larger than the sum of its proper divisors (3842699).

103065521557 is an equidigital number, since it uses as much as digits as its factorization.

103065521557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842698.

The product of its (nonzero) digits is 157500, while the sum is 40.

The spelling of 103065521557 in words is "one hundred three billion, sixty-five million, five hundred twenty-one thousand, five hundred fifty-seven".