13950421755 has 32 divisors (see below), whose sum is σ = 23059458048. Its totient is φ = 7194355200.

The previous prime is 13950421747. The next prime is 13950421777. The reversal of 13950421755 is 55712405931.

It is a happy number.

It is not a de Polignac number, because 13950421755 - 2³ = 13950421747 is a prime.

It is a super-2 number, since 2×13950421755² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591540 + ... + 614670.

It is an arithmetic number, because the mean of its divisors is an integer number (720608064).

Almost surely, 2^13950421755 is an apocalyptic number.

13950421755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13950421755 is a deficient number, since it is larger than the sum of its proper divisors (9109036293).

13950421755 is a wasteful number, since it uses less digits than its factorization.

13950421755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24467.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 13950421755 in words is "thirteen billion, nine hundred fifty million, four hundred twenty-one thousand, seven hundred fifty-five".