196979267520 has 672 divisors, whose sum is σ = 812554469376. Its totient is φ = 42848870400.

The previous prime is 196979267497. The next prime is 196979267531. The reversal of 196979267520 is 25762979691.

196979267520 is a `hidden beast` number, since 19 + 6 + 9 + 7 + 92 + 6 + 7 + 520 = 666.

196979267520 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 38119977 + ... + 38125143.

Almost surely, 2^196979267520 is an apocalyptic number.

196979267520 is a gapful number since it is divisible by the number (10) 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 196979267520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406277234688).

196979267520 is an abundant number, since it is smaller than the sum of its proper divisors (615575201856).

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

196979267520 is a wasteful number, since it uses less digits than its factorization.

196979267520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5276 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 196979267520 in words is "one hundred ninety-six billion, nine hundred seventy-nine million, two hundred sixty-seven thousand, five hundred twenty".