6197156640 has 384 divisors, whose sum is σ = 22518155520. Its totient is φ = 1590534144.

The previous prime is 6197156611. The next prime is 6197156657. The reversal of 6197156640 is 466517916.

6197156640 is a `hidden beast` number, since 6 + 19 + 71 + 566 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21897939 + ... + 21898221.

It is an arithmetic number, because the mean of its divisors is an integer number (58641030).

Almost surely, 2^6197156640 is an apocalyptic number.

6197156640 is a gapful number since it is divisible by the number (60) 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 6197156640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11259077760).

6197156640 is an abundant number, since it is smaller than the sum of its proper divisors (16320998880).

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

6197156640 is a wasteful number, since it uses less digits than its factorization.

6197156640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 6197156640 is about 78722.0213155125. The cubic root of 6197156640 is about 1836.8096732131.

The spelling of 6197156640 in words is "six billion, one hundred ninety-seven million, one hundred fifty-six thousand, six hundred forty".