13912743905 has 16 divisors (see below), whose sum is σ = 16806099024. Its totient is φ = 11056435200.

The previous prime is 13912743899. The next prime is 13912743913. The reversal of 13912743905 is 50934721931.

It can be written as a sum of positive squares in 8 ways, for example, as 2866103296 + 11046640609 = 53536^2 + 105103^2 .

It is not a de Polignac number, because 13912743905 - 2⁶ = 13912743841 is a prime.

It is a super-2 number, since 2×13912743905² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115705 + ... + 1128105.

It is an arithmetic number, because the mean of its divisors is an integer number (1050381189).

Almost surely, 2^13912743905 is an apocalyptic number.

It is an amenable number.

13912743905 is a deficient number, since it is larger than the sum of its proper divisors (2893355119).

13912743905 is a wasteful number, since it uses less digits than its factorization.

13912743905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13876.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 13912743905 in words is "thirteen billion, nine hundred twelve million, seven hundred forty-three thousand, nine hundred five".