20529947076 has 24 divisors (see below), whose sum is σ = 48807045504. Its totient is φ = 6714196320.

The previous prime is 20529947071. The next prime is 20529947093. The reversal of 20529947076 is 67074992502.

It is not an unprimeable number, because it can be changed into a prime (20529947071) 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, 16139260 + ... + 16140531.

It is an arithmetic number, because the mean of its divisors is an integer number (2033626896).

Almost surely, 2^20529947076 is an apocalyptic number.

It is an amenable number.

20529947076 is an abundant number, since it is smaller than the sum of its proper divisors (28277098428).

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

20529947076 is a wasteful number, since it uses less digits than its factorization.

20529947076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32279851 (or 32279849 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 20529947076 in words is "twenty billion, five hundred twenty-nine million, nine hundred forty-seven thousand, seventy-six".