20587413012 has 12 divisors (see below), whose sum is σ = 48037297056. Its totient is φ = 6862471000.

The previous prime is 20587412971. The next prime is 20587413013. The reversal of 20587413012 is 21031478502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587413013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857808864 + ... + 857808887.

It is an arithmetic number, because the mean of its divisors is an integer number (4003108088).

Almost surely, 2^20587413012 is an apocalyptic number.

It is an amenable number.

20587413012 is an abundant number, since it is smaller than the sum of its proper divisors (27449884044).

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

20587413012 is a wasteful number, since it uses less digits than its factorization.

20587413012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715617758 (or 1715617756 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 20587413012 in words is "twenty billion, five hundred eighty-seven million, four hundred thirteen thousand, twelve".