21343634565130 has 16 divisors (see below), whose sum is σ = 38424029922504. Its totient is φ = 8536234336000.

The previous prime is 21343634565107. The next prime is 21343634565221. The reversal of 21343634565130 is 3156543634312.

It can be written as a sum of positive squares in 4 ways, for example, as 9570837380329 + 11772797184801 = 3093677^2 + 3431151^2 .

It is a super-3 number, since 3×21343634565130³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152362747 + ... + 152502766.

Almost surely, 2^{21343634565130} is an apocalyptic number.

21343634565130 is a deficient number, since it is larger than the sum of its proper divisors (17080395357374).

21343634565130 is a wasteful number, since it uses less digits than its factorization.

21343634565130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304872521.

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 21343634565130 in words is "twenty-one trillion, three hundred forty-three billion, six hundred thirty-four million, five hundred sixty-five thousand, one hundred thirty".