20598597748 has 6 divisors (see below), whose sum is σ = 36047546066. Its totient is φ = 10299298872.

The previous prime is 20598597727. The next prime is 20598597769. The reversal of 20598597748 is 84779589502.

It is an interprime number because it is at equal distance from previous prime (20598597727) and next prime (20598597769).

It can be written as a sum of positive squares in only one way, i.e., 17429808484 + 3168789264 = 132022^2 + 56292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20598597748.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2574824715 + ... + 2574824722.

Almost surely, 2^20598597748 is an apocalyptic number.

It is an amenable number.

20598597748 is a deficient number, since it is larger than the sum of its proper divisors (15448948318).

20598597748 is a wasteful number, since it uses less digits than its factorization.

20598597748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149649441 (or 5149649439 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 64.

The spelling of 20598597748 in words is "twenty billion, five hundred ninety-eight million, five hundred ninety-seven thousand, seven hundred forty-eight".