196166729540 has 96 divisors (see below), whose sum is σ = 418502246400. Its totient is φ = 77232355200.

The previous prime is 196166729533. The next prime is 196166729593. The reversal of 196166729540 is 45927661691.

It is a super-2 number, since 2×196166729540² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160397369 + ... + 160398591.

It is an arithmetic number, because the mean of its divisors is an integer number (4359398400).

Almost surely, 2^196166729540 is an apocalyptic number.

196166729540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196166729540 is an abundant number, since it is smaller than the sum of its proper divisors (222335516860).

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

196166729540 is a wasteful number, since it uses less digits than its factorization.

196166729540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 196166729540 in words is "one hundred ninety-six billion, one hundred sixty-six million, seven hundred twenty-nine thousand, five hundred forty".