19773445248 has 120 divisors (see below), whose sum is σ = 58888094265. Its totient is φ = 6586375680.

The previous prime is 19773445199. The next prime is 19773445261. The reversal of 19773445248 is 84254437791.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

19773445248 is a `hidden beast` number, since 1 + 9 + 7 + 73 + 44 + 524 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19732382784 + 41062464 = 140472^2 + 6408^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99432.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 19773445194 and 19773445203.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 14317518 + ... + 14318898.

Almost surely, 2^19773445248 is an apocalyptic number.

19773445248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19773445248

19773445248 is an abundant number, since it is smaller than the sum of its proper divisors (39114649017).

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

19773445248 is an frugal number, since it uses more digits than its factorization.

19773445248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788 (or 1386 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 19773445248 in words is "nineteen billion, seven hundred seventy-three million, four hundred forty-five thousand, two hundred forty-eight".