19775974120 has 32 divisors (see below), whose sum is σ = 50852505600. Its totient is φ = 6780333888.

The previous prime is 19775974109. The next prime is 19775974121. The reversal of 19775974120 is 2147957791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19775974121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35313960 + ... + 35314519.

It is an arithmetic number, because the mean of its divisors is an integer number (1589140800).

Almost surely, 2^19775974120 is an apocalyptic number.

19775974120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19775974120 is an abundant number, since it is smaller than the sum of its proper divisors (31076531480).

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

19775974120 is a wasteful number, since it uses less digits than its factorization.

19775974120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70628497 (or 70628493 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 19775974120 in words is "nineteen billion, seven hundred seventy-five million, nine hundred seventy-four thousand, one hundred twenty".