6420544054 has 16 divisors (see below), whose sum is σ = 10434484368. Its totient is φ = 2951165952.

The previous prime is 6420544051. The next prime is 6420544069. The reversal of 6420544054 is 4504450246.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420544051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2194347 + ... + 2197270.

It is an arithmetic number, because the mean of its divisors is an integer number (652155273).

Almost surely, 2^6420544054 is an apocalyptic number.

6420544054 is a deficient number, since it is larger than the sum of its proper divisors (4013940314).

6420544054 is a wasteful number, since it uses less digits than its factorization.

6420544054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391679.

The product of its (nonzero) digits is 76800, while the sum is 34.

The square root of 6420544054 is about 80128.2974610094. The cubic root of 6420544054 is about 1858.6200167972.

The spelling of 6420544054 in words is "six billion, four hundred twenty million, five hundred forty-four thousand, fifty-four".