20035545421 has 4 divisors (see below), whose sum is σ = 20289160000. Its totient is φ = 19781930844.

The previous prime is 20035545389. The next prime is 20035545461. The reversal of 20035545421 is 12454553002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20035545421 - 2⁵ = 20035545389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035545461) 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, 126807171 + ... + 126807328.

It is an arithmetic number, because the mean of its divisors is an integer number (5072290000).

Almost surely, 2^20035545421 is an apocalyptic number.

It is an amenable number.

20035545421 is a deficient number, since it is larger than the sum of its proper divisors (253614579).

20035545421 is an equidigital number, since it uses as much as digits as its factorization.

20035545421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253614578.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 20035545421 in words is "twenty billion, thirty-five million, five hundred forty-five thousand, four hundred twenty-one".