197616121178364 has 144 divisors (see below), whose sum is σ = 572556098150400. Its totient is φ = 56297087130240.

The previous prime is 197616121178353. The next prime is 197616121178381. The reversal of 197616121178364 is 463871121616791.

197616121178364 is a `hidden beast` number, since 1 + 9 + 7 + 6 + 1 + 612 + 1 + 1 + 7 + 8 + 3 + 6 + 4 = 666.

It is a super-3 number, since 3×197616121178364³ (a number of 44 digits) contains 333 as substring.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2196104517 + ... + 2196194499.

Almost surely, 2^{197616121178364} is an apocalyptic number.

197616121178364 is a gapful number since it is divisible by the number (14) 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 197616121178364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286278049075200).

197616121178364 is an abundant number, since it is smaller than the sum of its proper divisors (374939976972036).

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

197616121178364 is a wasteful number, since it uses less digits than its factorization.

197616121178364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115320 (or 115315 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The spelling of 197616121178364 in words is "one hundred ninety-seven trillion, six hundred sixteen billion, one hundred twenty-one million, one hundred seventy-eight thousand, three hundred sixty-four".