20179321744 has 40 divisors (see below), whose sum is σ = 39764517408. Its totient is φ = 9918954240.

The previous prime is 20179321711. The next prime is 20179321751. The reversal of 20179321744 is 44712397102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20179321697 and 20179321706.

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, 179284 + ... + 269260.

Almost surely, 2^20179321744 is an apocalyptic number.

It is an amenable number.

20179321744 is a deficient number, since it is larger than the sum of its proper divisors (19585195664).

20179321744 is a wasteful number, since it uses less digits than its factorization.

20179321744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90223 (or 90217 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 20179321744 in words is "twenty billion, one hundred seventy-nine million, three hundred twenty-one thousand, seven hundred forty-four".