19720013358 has 32 divisors (see below), whose sum is σ = 40649233536. Its totient is φ = 6373060128.

The previous prime is 19720013329. The next prime is 19720013359. The reversal of 19720013358 is 85331002791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19720013359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94116 + ... + 219767.

It is an arithmetic number, because the mean of its divisors is an integer number (1270288548).

Almost surely, 2^19720013358 is an apocalyptic number.

19720013358 is an abundant number, since it is smaller than the sum of its proper divisors (20929220178).

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

19720013358 is a wasteful number, since it uses less digits than its factorization.

19720013358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314208.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 19720013358 in words is "nineteen billion, seven hundred twenty million, thirteen thousand, three hundred fifty-eight".