19772546112 has 126 divisors (see below), whose sum is σ = 62295257934. Its totient is φ = 5991659520.

The previous prime is 19772546107. The next prime is 19772546119. The reversal of 19772546112 is 21164527791.

19772546112 is a `hidden beast` number, since 1 + 9 + 7 + 7 + 25 + 4 + 611 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15791440896 + 3981105216 = 125664^2 + 63096^2 .

It is not an unprimeable number, because it can be changed into a prime (19772546119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72153 + ... + 211544.

It is an arithmetic number, because the mean of its divisors is an integer number (494406809).

Almost surely, 2^19772546112 is an apocalyptic number.

19772546112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19772546112 is an abundant number, since it is smaller than the sum of its proper divisors (42522711822).

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

19772546112 is a wasteful number, since it uses less digits than its factorization.

19772546112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283737 (or 283713 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The spelling of 19772546112 in words is "nineteen billion, seven hundred seventy-two million, five hundred forty-six thousand, one hundred twelve".