6720437814755 has 64 divisors (see below), whose sum is σ = 9585445478400. Its totient is φ = 4426161408000.

The previous prime is 6720437814721. The next prime is 6720437814757. The reversal of 6720437814755 is 5574187340276.

It is not a de Polignac number, because 6720437814755 - 2¹⁰ = 6720437813731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6720437814694 and 6720437814703.

It is not an unprimeable number, because it can be changed into a prime (6720437814757) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 209663480 + ... + 209695530.

It is an arithmetic number, because the mean of its divisors is an integer number (149772585600).

Almost surely, 2^{6720437814755} is an apocalyptic number.

6720437814755 is a deficient number, since it is larger than the sum of its proper divisors (2865007663645).

6720437814755 is a wasteful number, since it uses less digits than its factorization.

6720437814755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33540.

The product of its (nonzero) digits is 39513600, while the sum is 59.

The spelling of 6720437814755 in words is "six trillion, seven hundred twenty billion, four hundred thirty-seven million, eight hundred fourteen thousand, seven hundred fifty-five".