20738390716 has 12 divisors (see below), whose sum is σ = 36295197120. Its totient is φ = 10368334400.

The previous prime is 20738390713. The next prime is 20738390719. The reversal of 20738390716 is 61709383702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20738390713) and next prime (20738390719).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738390713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159436 + ... + 258643.

It is an arithmetic number, because the mean of its divisors is an integer number (3024599760).

Almost surely, 2^20738390716 is an apocalyptic number.

It is an amenable number.

20738390716 is a deficient number, since it is larger than the sum of its proper divisors (15556806404).

20738390716 is a wasteful number, since it uses less digits than its factorization.

20738390716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430484 (or 430482 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 20738390716 in words is "twenty billion, seven hundred thirty-eight million, three hundred ninety thousand, seven hundred sixteen".