6545260620438 has 64 divisors (see below), whose sum is σ = 14187892131072. Its totient is φ = 2004953932800.

The previous prime is 6545260620427. The next prime is 6545260620443. The reversal of 6545260620438 is 8340260625456.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12242770 + ... + 12766202.

It is an arithmetic number, because the mean of its divisors is an integer number (221685814548).

Almost surely, 2^{6545260620438} is an apocalyptic number.

6545260620438 is an abundant number, since it is smaller than the sum of its proper divisors (7642631510634).

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

6545260620438 is a wasteful number, since it uses less digits than its factorization.

6545260620438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526349.

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 6545260620438 in words is "six trillion, five hundred forty-five billion, two hundred sixty million, six hundred twenty thousand, four hundred thirty-eight".