20636461419 has 32 divisors (see below), whose sum is σ = 32994683904. Its totient is φ = 11217191040.

The previous prime is 20636461399. The next prime is 20636461463. The reversal of 20636461419 is 91416463602.

It is a happy number.

It is not a de Polignac number, because 20636461419 - 2⁵ = 20636461387 is a prime.

It is a super-2 number, since 2×20636461419² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20636461019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30604 + ... + 205449.

It is an arithmetic number, because the mean of its divisors is an integer number (1031083872).

Almost surely, 2^20636461419 is an apocalyptic number.

20636461419 is a deficient number, since it is larger than the sum of its proper divisors (12358222485).

20636461419 is a wasteful number, since it uses less digits than its factorization.

20636461419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236267.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 20636461419 in words is "twenty billion, six hundred thirty-six million, four hundred sixty-one thousand, four hundred nineteen".