2135650474421 has 4 divisors (see below), whose sum is σ = 2135760008844. Its totient is φ = 2135540940000.

The previous prime is 2135650474409. The next prime is 2135650474481. The reversal of 2135650474421 is 1244740565312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1225639411396 + 910011063025 = 1107086^2 + 953945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135650474421 - 2¹⁸ = 2135650212277 is a prime.

It is a super-2 number, since 2×2135650474421² (a number of 25 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 (2135650474481) 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, 54737960 + ... + 54776961.

It is an arithmetic number, because the mean of its divisors is an integer number (533940002211).

Almost surely, 2^{2135650474421} is an apocalyptic number.

It is an amenable number.

2135650474421 is a deficient number, since it is larger than the sum of its proper divisors (109534423).

2135650474421 is a wasteful number, since it uses less digits than its factorization.

2135650474421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109534422.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 2135650474421 in words is "two trillion, one hundred thirty-five billion, six hundred fifty million, four hundred seventy-four thousand, four hundred twenty-one".