19770515468 has 12 divisors (see below), whose sum is σ = 37743711432. Its totient is φ = 8986597920.

The previous prime is 19770515461. The next prime is 19770515489. The reversal of 19770515468 is 86451507791.

It is not an unprimeable number, because it can be changed into a prime (19770515461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224664905 + ... + 224664992.

It is an arithmetic number, because the mean of its divisors is an integer number (3145309286).

Almost surely, 2^19770515468 is an apocalyptic number.

It is an amenable number.

19770515468 is a deficient number, since it is larger than the sum of its proper divisors (17973195964).

19770515468 is a wasteful number, since it uses less digits than its factorization.

19770515468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449329912 (or 449329910 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 19770515468 in words is "nineteen billion, seven hundred seventy million, five hundred fifteen thousand, four hundred sixty-eight".