21435410477057 has 4 divisors (see below), whose sum is σ = 21439288790976. Its totient is φ = 21431532163140.

The previous prime is 21435410477009. The next prime is 21435410477111. The reversal of 21435410477057 is 75077401453412.

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 21435410477057 - 2⁶ = 21435410476993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21435410476996 and 21435410477014.

It is not an unprimeable number, because it can be changed into a prime (21435410477857) 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, 1939148669 + ... + 1939159722.

It is an arithmetic number, because the mean of its divisors is an integer number (5359822197744).

Almost surely, 2^{21435410477057} is an apocalyptic number.

It is an amenable number.

21435410477057 is a deficient number, since it is larger than the sum of its proper divisors (3878313919).

21435410477057 is an equidigital number, since it uses as much as digits as its factorization.

21435410477057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878313918.

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 21435410477057 in words is "twenty-one trillion, four hundred thirty-five billion, four hundred ten million, four hundred seventy-seven thousand, fifty-seven".