197926875136 has 52 divisors (see below), whose sum is σ = 395928235944. Its totient is φ = 98932736000.

The previous prime is 197926875079. The next prime is 197926875151. The reversal of 197926875136 is 631578629791.

It is a super-2 number, since 2×197926875136² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19209186 + ... + 19219486.

Almost surely, 2^197926875136 is an apocalyptic number.

197926875136 is a gapful number since it is divisible by the number (16) 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 197926875136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197964117972).

197926875136 is an abundant number, since it is smaller than the sum of its proper divisors (198001360808).

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

197926875136 is an equidigital number, since it uses as much as digits as its factorization.

197926875136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15016 (or 14994 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 64.

The spelling of 197926875136 in words is "one hundred ninety-seven billion, nine hundred twenty-six million, eight hundred seventy-five thousand, one hundred thirty-six".