20715260623920 has 400 divisors, whose sum is σ = 73736552558592. Its totient is φ = 5386808033280.

The previous prime is 20715260623907. The next prime is 20715260623997. The reversal of 20715260623920 is 2932606251702.

20715260623920 is a `hidden beast` number, since 2 + 0 + 7 + 1 + 5 + 2 + 606 + 2 + 39 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 603873489 + ... + 603907791.

Almost surely, 2^{20715260623920} is an apocalyptic number.

20715260623920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20715260623920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36868276279296).

20715260623920 is an abundant number, since it is smaller than the sum of its proper divisors (53021291934672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20715260623920 is a wasteful number, since it uses less digits than its factorization.

20715260623920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36642 (or 36627 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20715260623920 in words is "twenty trillion, seven hundred fifteen billion, two hundred sixty million, six hundred twenty-three thousand, nine hundred twenty".