196879140540 has 96 divisors (see below), whose sum is σ = 614724586560. Its totient is φ = 52311529728.

The previous prime is 196879140533. The next prime is 196879140541. The reversal of 196879140540 is 45041978691.

196879140540 is a `hidden beast` number, since 1 + 9 + 6 + 8 + 7 + 91 + 4 + 0 + 540 = 666.

It is a super-2 number, since 2×196879140540² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196879140541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508527 + ... + 807686.

It is an arithmetic number, because the mean of its divisors is an integer number (6403381110).

Almost surely, 2^196879140540 is an apocalyptic number.

196879140540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196879140540 is an abundant number, since it is smaller than the sum of its proper divisors (417845446020).

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

196879140540 is a wasteful number, since it uses less digits than its factorization.

196879140540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316508 (or 1316500 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 196879140540 in words is "one hundred ninety-six billion, eight hundred seventy-nine million, one hundred forty thousand, five hundred forty".