20828612552 has 32 divisors (see below), whose sum is σ = 42609883680. Its totient is φ = 9466239360.

The previous prime is 20828612513. The next prime is 20828612569. The reversal of 20828612552 is 25521682802.

It is a super-2 number, since 2×20828612552² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932588 + ... + 954660.

It is an arithmetic number, because the mean of its divisors is an integer number (1331558865).

Almost surely, 2^20828612552 is an apocalyptic number.

20828612552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20828612552 is an abundant number, since it is smaller than the sum of its proper divisors (21781271128).

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

20828612552 is a wasteful number, since it uses less digits than its factorization.

20828612552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32813 (or 32809 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 20828612552 in words is "twenty billion, eight hundred twenty-eight million, six hundred twelve thousand, five hundred fifty-two".