20582740416 has 56 divisors (see below), whose sum is σ = 62238290560. Its totient is φ = 5880782592.

The previous prime is 20582740357. The next prime is 20582740441. The reversal of 20582740416 is 61404728502.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

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, 7655926 + ... + 7658613.

Almost surely, 2^20582740416 is an apocalyptic number.

It is an amenable number.

20582740416 is an abundant number, since it is smaller than the sum of its proper divisors (41655550144).

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

20582740416 is a wasteful number, since it uses less digits than its factorization.

20582740416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314561 (or 15314551 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 20582740416 in words is "twenty billion, five hundred eighty-two million, seven hundred forty thousand, four hundred sixteen".