20720282597 has 8 divisors (see below), whose sum is σ = 23965628736. Its totient is φ = 17546262912.

The previous prime is 20720282593. The next prime is 20720282599. The reversal of 20720282597 is 79528202702.

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 20720282597 - 2² = 20720282593 is a prime.

It is a super-2 number, since 2×20720282597² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20720282593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17830988 + ... + 17832149.

It is an arithmetic number, because the mean of its divisors is an integer number (2995703592).

Almost surely, 2^20720282597 is an apocalyptic number.

It is an amenable number.

20720282597 is a deficient number, since it is larger than the sum of its proper divisors (3245346139).

20720282597 is an equidigital number, since it uses as much as digits as its factorization.

20720282597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35663227.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 20720282597 in words is "twenty billion, seven hundred twenty million, two hundred eighty-two thousand, five hundred ninety-seven".