19770220992 has 224 divisors, whose sum is σ = 57064924224. Its totient is φ = 6016204800.

The previous prime is 19770220973. The next prime is 19770220999. The reversal of 19770220992 is 29902207791.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19770220999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32251278 + ... + 32251890.

It is an arithmetic number, because the mean of its divisors is an integer number (254754126).

Almost surely, 2^19770220992 is an apocalyptic number.

19770220992 is a gapful number since it is divisible by the number (12) 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 19770220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28532462112).

19770220992 is an abundant number, since it is smaller than the sum of its proper divisors (37294703232).

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

19770220992 is a wasteful number, since it uses less digits than its factorization.

19770220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 19770220992 in words is "nineteen billion, seven hundred seventy million, two hundred twenty thousand, nine hundred ninety-two".