20064578732 has 24 divisors (see below), whose sum is σ = 38309117952. Its totient is φ = 9119307600.

The previous prime is 20064578671. The next prime is 20064578749. The reversal of 20064578732 is 23787546002.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 562757 + ... + 597347.

It is an arithmetic number, because the mean of its divisors is an integer number (1596213248).

Almost surely, 2^20064578732 is an apocalyptic number.

20064578732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20064578732 is a deficient number, since it is larger than the sum of its proper divisors (18244539220).

20064578732 is a wasteful number, since it uses less digits than its factorization.

20064578732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47789 (or 47787 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 20064578732 in words is "twenty billion, sixty-four million, five hundred seventy-eight thousand, seven hundred thirty-two".