14255390781 has 6 divisors (see below), whose sum is σ = 20591120030. Its totient is φ = 9503593848.

The previous prime is 14255390767. The next prime is 14255390797. The reversal of 14255390781 is 18709355241.

14255390781 is a `hidden beast` number, since 1 + 4 + 2 + 553 + 90 + 7 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14097762756 + 157628025 = 118734^2 + 12555^2 .

It is not a de Polignac number, because 14255390781 - 2²⁶ = 14188281917 is a prime.

It is a super-2 number, since 2×14255390781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14255390381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 791966146 + ... + 791966163.

Almost surely, 2^14255390781 is an apocalyptic number.

It is an amenable number.

14255390781 is a deficient number, since it is larger than the sum of its proper divisors (6335729249).

14255390781 is a wasteful number, since it uses less digits than its factorization.

14255390781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583932315 (or 1583932312 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 14255390781 in words is "fourteen billion, two hundred fifty-five million, three hundred ninety thousand, seven hundred eighty-one".