20820527124 has 24 divisors (see below), whose sum is σ = 48811478688. Its totient is φ = 6907283040.

The previous prime is 20820526921. The next prime is 20820527129. The reversal of 20820527124 is 42172502802.

It is a super-2 number, since 2×20820527124² (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 (20820527129) 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, 4108947 + ... + 4114010.

It is an arithmetic number, because the mean of its divisors is an integer number (2033811612).

Almost surely, 2^20820527124 is an apocalyptic number.

It is an amenable number.

20820527124 is an abundant number, since it is smaller than the sum of its proper divisors (27990951564).

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

20820527124 is a wasteful number, since it uses less digits than its factorization.

20820527124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223175 (or 8223173 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 20820527124 in words is "twenty billion, eight hundred twenty million, five hundred twenty-seven thousand, one hundred twenty-four".