20797527830 has 16 divisors (see below), whose sum is σ = 39637641600. Its totient is φ = 7829657472.

The previous prime is 20797527827. The next prime is 20797527841. The reversal of 20797527830 is 3872579702.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 61169030 + ... + 61169369.

It is an arithmetic number, because the mean of its divisors is an integer number (2477352600).

Almost surely, 2^20797527830 is an apocalyptic number.

20797527830 is a deficient number, since it is larger than the sum of its proper divisors (18840113770).

20797527830 is a wasteful number, since it uses less digits than its factorization.

20797527830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122338423.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 20797527830 in words is "twenty billion, seven hundred ninety-seven million, five hundred twenty-seven thousand, eight hundred thirty".