6437552463540 has 480 divisors, whose sum is σ = 22661924681088. Its totient is φ = 1516040064000.

The previous prime is 6437552463521. The next prime is 6437552463553. The reversal of 6437552463540 is 453642557346.

6437552463540 is a `hidden beast` number, since 6 + 4 + 3 + 7 + 5 + 52 + 46 + 3 + 540 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 435816355 + ... + 435831125.

Almost surely, 2^{6437552463540} is an apocalyptic number.

6437552463540 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 6437552463540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11330962340544).

6437552463540 is an abundant number, since it is smaller than the sum of its proper divisors (16224372217548).

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

6437552463540 is a wasteful number, since it uses less digits than its factorization.

6437552463540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501 (or 15490 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 54.

The spelling of 6437552463540 in words is "six trillion, four hundred thirty-seven billion, five hundred fifty-two million, four hundred sixty-three thousand, five hundred forty".