6720540786995 has 32 divisors (see below), whose sum is σ = 9234846930816. Its totient is φ = 4599327052800.

The previous prime is 6720540786977. The next prime is 6720540787043. The reversal of 6720540786995 is 5996870450276.

It is a de Polignac number, because none of the positive numbers 2^k-6720540786995 is a prime.

It is a super-2 number, since 2×6720540786995² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36697055 + ... + 36879735.

It is an arithmetic number, because the mean of its divisors is an integer number (288588966588).

Almost surely, 2^{6720540786995} is an apocalyptic number.

6720540786995 is a deficient number, since it is larger than the sum of its proper divisors (2514306143821).

6720540786995 is a wasteful number, since it uses less digits than its factorization.

6720540786995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184751.

The product of its (nonzero) digits is 228614400, while the sum is 68.

The spelling of 6720540786995 in words is "six trillion, seven hundred twenty billion, five hundred forty million, seven hundred eighty-six thousand, nine hundred ninety-five".