20351644206130 has 32 divisors (see below), whose sum is σ = 36999282927024. Its totient is φ = 8059571106816.

The previous prime is 20351644206121. The next prime is 20351644206139. The reversal of 20351644206130 is 3160244615302.

It is an interprime number because it is at equal distance from previous prime (20351644206121) and next prime (20351644206139).

It can be written as a sum of positive squares in 8 ways, for example, as 6734902138561 + 13616742067569 = 2595169^2 + 3690087^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20351644206130.

It is not an unprimeable number, because it can be changed into a prime (20351644206139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19402147 + ... + 20424166.

Almost surely, 2^{20351644206130} is an apocalyptic number.

20351644206130 is a deficient number, since it is larger than the sum of its proper divisors (16647638720894).

20351644206130 is a wasteful number, since it uses less digits than its factorization.

20351644206130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39826830.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 20351644206130 in words is "twenty trillion, three hundred fifty-one billion, six hundred forty-four million, two hundred six thousand, one hundred thirty".