20512501052 has 12 divisors (see below), whose sum is σ = 35990605056. Its totient is φ = 10229471040.

The previous prime is 20512501007. The next prime is 20512501057. The reversal of 20512501052 is 25010521502.

It is a super-2 number, since 2×20512501052² (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 (20512501057) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6693149 + ... + 6696212.

It is an arithmetic number, because the mean of its divisors is an integer number (2999217088).

Almost surely, 2^20512501052 is an apocalyptic number.

It is an amenable number.

20512501052 is a deficient number, since it is larger than the sum of its proper divisors (15478104004).

20512501052 is a wasteful number, since it uses less digits than its factorization.

20512501052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389748 (or 13389746 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 20512501052 in words is "twenty billion, five hundred twelve million, five hundred one thousand, fifty-two".