36435502421 has 4 divisors (see below), whose sum is σ = 36442370700. Its totient is φ = 36428634144.

The previous prime is 36435502409. The next prime is 36435502469. The reversal of 36435502421 is 12420553463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12420553463 = 29 ⋅428294947.

It can be written as a sum of positive squares in 2 ways, for example, as 5911918321 + 30523584100 = 76889^2 + 174710^2 .

It is a cyclic number.

It is not a de Polignac number, because 36435502421 - 2²² = 36431308117 is a prime.

It is a super-2 number, since 2×36435502421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36435502321) 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, 3426176 + ... + 3436793.

It is an arithmetic number, because the mean of its divisors is an integer number (9110592675).

Almost surely, 2^36435502421 is an apocalyptic number.

It is an amenable number.

36435502421 is a deficient number, since it is larger than the sum of its proper divisors (6868279).

36435502421 is an equidigital number, since it uses as much as digits as its factorization.

36435502421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868278.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 36435502421 in words is "thirty-six billion, four hundred thirty-five million, five hundred two thousand, four hundred twenty-one".