20214943497 has 16 divisors (see below), whose sum is σ = 34226359680. Its totient is φ = 11551396176.

The previous prime is 20214943477. The next prime is 20214943531. The reversal of 20214943497 is 79434941202.

20214943497 is a `hidden beast` number, since 2 + 0 + 214 + 94 + 349 + 7 = 666.

It is not a de Polignac number, because 20214943497 - 2⁷ = 20214943369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20214943417) 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, 53478498 + ... + 53478875.

It is an arithmetic number, because the mean of its divisors is an integer number (2139147480).

Almost surely, 2^20214943497 is an apocalyptic number.

20214943497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20214943497 is a deficient number, since it is larger than the sum of its proper divisors (14011416183).

20214943497 is a wasteful number, since it uses less digits than its factorization.

20214943497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106957389 (or 106957383 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20214943497 in words is "twenty billion, two hundred fourteen million, nine hundred forty-three thousand, four hundred ninety-seven".