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14690969971 = 80918159419
BaseRepresentation
bin11011010111010011…
…00110100101110011
31101220211122121011221
431223221212211303
5220041342014341
610425434245511
71030025120146
oct155351464563
941824577157
1014690969971
1162597401a7
122a1bb86897
131501809052
149d518005d
155aeb1eed1
hex36ba66973

14690969971 has 4 divisors (see below), whose sum is σ = 14709130200. Its totient is φ = 14672809744.

The previous prime is 14690969957. The next prime is 14690969977. The reversal of 14690969971 is 17996909641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17996909641 = 54133324757.

It is a cyclic number.

It is not a de Polignac number, because 14690969971 - 25 = 14690969939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14690969977) 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, 9078901 + ... + 9080518.

It is an arithmetic number, because the mean of its divisors is an integer number (3677282550).

Almost surely, 214690969971 is an apocalyptic number.

14690969971 is a deficient number, since it is larger than the sum of its proper divisors (18160229).

14690969971 is an equidigital number, since it uses as much as digits as its factorization.

14690969971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18160228.

The product of its (nonzero) digits is 6613488, while the sum is 61.

The spelling of 14690969971 in words is "fourteen billion, six hundred ninety million, nine hundred sixty-nine thousand, nine hundred seventy-one".

Divisors: 1 809 18159419 14690969971