20377002357 has 16 divisors (see below), whose sum is σ = 30313423360. Its totient is φ = 13528296000.

The previous prime is 20377002353. The next prime is 20377002391. The reversal of 20377002357 is 75320077302.

It is not a de Polignac number, because 20377002357 - 2² = 20377002353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377002353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1559269 + ... + 1572282.

It is an arithmetic number, because the mean of its divisors is an integer number (1894588960).

Almost surely, 2^20377002357 is an apocalyptic number.

20377002357 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20377002357 is a deficient number, since it is larger than the sum of its proper divisors (9936421003).

20377002357 is a wasteful number, since it uses less digits than its factorization.

20377002357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131801 (or 3131795 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 36.

Adding to 20377002357 its reverse (75320077302), we get a palindrome (95697079659).

The spelling of 20377002357 in words is "twenty billion, three hundred seventy-seven million, two thousand, three hundred fifty-seven".