20377032645 has 8 divisors (see below), whose sum is σ = 32603252256. Its totient is φ = 10867750736.

The previous prime is 20377032631. The next prime is 20377032649. The reversal of 20377032645 is 54623077302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20377032645 - 2⁴ = 20377032629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377032649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679234407 + ... + 679234436.

It is an arithmetic number, because the mean of its divisors is an integer number (4075406532).

Almost surely, 2^20377032645 is an apocalyptic number.

It is an amenable number.

20377032645 is a deficient number, since it is larger than the sum of its proper divisors (12226219611).

20377032645 is a wasteful number, since it uses less digits than its factorization.

20377032645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358468851.

The product of its (nonzero) digits is 211680, while the sum is 39.

The spelling of 20377032645 in words is "twenty billion, three hundred seventy-seven million, thirty-two thousand, six hundred forty-five".