197156039520 has 384 divisors, whose sum is σ = 685999964160. Its totient is φ = 47199559680.

The previous prime is 197156039503. The next prime is 197156039527. The reversal of 197156039520 is 25930651791.

197156039520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 197156039520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197156039527) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180380094 + ... + 180381186.

It is an arithmetic number, because the mean of its divisors is an integer number (1786458240).

Almost surely, 2^197156039520 is an apocalyptic number.

197156039520 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 197156039520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342999982080).

197156039520 is an abundant number, since it is smaller than the sum of its proper divisors (488843924640).

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

197156039520 is a wasteful number, since it uses less digits than its factorization.

197156039520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 48.

The spelling of 197156039520 in words is "one hundred ninety-seven billion, one hundred fifty-six million, thirty-nine thousand, five hundred twenty".