6742555909920 has 384 divisors, whose sum is σ = 24846745593600. Its totient is φ = 1702988292096.

The previous prime is 6742555909877. The next prime is 6742555909931. The reversal of 6742555909920 is 299095552476.

6742555909920 is a `hidden beast` number, since 6 + 74 + 2 + 5 + 559 + 0 + 9 + 9 + 2 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 544758772 + ... + 544771148.

It is an arithmetic number, because the mean of its divisors is an integer number (64705066650).

Almost surely, 2^{6742555909920} is an apocalyptic number.

6742555909920 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 6742555909920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12423372796800).

6742555909920 is an abundant number, since it is smaller than the sum of its proper divisors (18104189683680).

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

6742555909920 is a wasteful number, since it uses less digits than its factorization.

6742555909920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057 (or 19043 counting only the distinct ones).

The product of its (nonzero) digits is 61236000, while the sum is 63.

The spelling of 6742555909920 in words is "six trillion, seven hundred forty-two billion, five hundred fifty-five million, nine hundred nine thousand, nine hundred twenty".