203148139569 has 16 divisors (see below), whose sum is σ = 280229310720. Its totient is φ = 130750363520.

The previous prime is 203148139499. The next prime is 203148139661. The reversal of 203148139569 is 965931841302.

It is a cyclic number.

It is not a de Polignac number, because 203148139569 - 2¹² = 203148135473 is a prime.

It is a super-2 number, since 2×203148139569² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203148149569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936904 + ... + 1133174.

It is an arithmetic number, because the mean of its divisors is an integer number (17514331920).

Almost surely, 2^203148139569 is an apocalyptic number.

203148139569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

203148139569 is a deficient number, since it is larger than the sum of its proper divisors (77081171151).

203148139569 is a wasteful number, since it uses less digits than its factorization.

203148139569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208200.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 203148139569 in words is "two hundred three billion, one hundred forty-eight million, one hundred thirty-nine thousand, five hundred sixty-nine".