20072719980 has 36 divisors (see below), whose sum is σ = 60887251152. Its totient is φ = 5352725280.

The previous prime is 20072719973. The next prime is 20072719981. The reversal of 20072719980 is 8991727002.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (20072719981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55757376 + ... + 55757735.

It is an arithmetic number, because the mean of its divisors is an integer number (1691312532).

Almost surely, 2^20072719980 is an apocalyptic number.

20072719980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20072719980 is an abundant number, since it is smaller than the sum of its proper divisors (40814531172).

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

20072719980 is a wasteful number, since it uses less digits than its factorization.

20072719980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111515126 (or 111515121 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 20072719980 in words is "twenty billion, seventy-two million, seven hundred nineteen thousand, nine hundred eighty".