6454556604240 has 80 divisors (see below), whose sum is σ = 20009766614400. Its totient is φ = 1721159942656.

The previous prime is 6454556604239. The next prime is 6454556604259. The reversal of 6454556604240 is 424066554546.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×6454556604240² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7368301 + ... + 8197619.

It is an arithmetic number, because the mean of its divisors is an integer number (250122082680).

Almost surely, 2^{6454556604240} is an apocalyptic number.

6454556604240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6454556604240 is an abundant number, since it is smaller than the sum of its proper divisors (13555210010160).

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

6454556604240 is a wasteful number, since it uses less digits than its factorization.

6454556604240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861764 (or 861758 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 6454556604240 in words is "six trillion, four hundred fifty-four billion, five hundred fifty-six million, six hundred four thousand, two hundred forty".