20007643210377 has 16 divisors (see below), whose sum is σ = 27247008859392. Its totient is φ = 13053406487040.

The previous prime is 20007643210367. The next prime is 20007643210391. The reversal of 20007643210377 is 77301234670002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20007643210377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20007643210327) 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, 5154874 + ... + 8160147.

It is an arithmetic number, because the mean of its divisors is an integer number (1702938053712).

Almost surely, 2^{20007643210377} is an apocalyptic number.

It is an amenable number.

20007643210377 is a deficient number, since it is larger than the sum of its proper divisors (7239365649015).

20007643210377 is a wasteful number, since it uses less digits than its factorization.

20007643210377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325728.

The product of its (nonzero) digits is 296352, while the sum is 42.

Adding to 20007643210377 its reverse (77301234670002), we get a palindrome (97308877880379).

The spelling of 20007643210377 in words is "twenty trillion, seven billion, six hundred forty-three million, two hundred ten thousand, three hundred seventy-seven".