624051420639 has 4 divisors (see below), whose sum is σ = 832068560856. Its totient is φ = 416034280424.

The previous prime is 624051420623. The next prime is 624051420661. The reversal of 624051420639 is 936024150426.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 624051420639 - 2⁴ = 624051420623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 624051420639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624051420439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104008570104 + ... + 104008570109.

It is an arithmetic number, because the mean of its divisors is an integer number (208017140214).

Almost surely, 2^624051420639 is an apocalyptic number.

624051420639 is a deficient number, since it is larger than the sum of its proper divisors (208017140217).

624051420639 is a wasteful number, since it uses less digits than its factorization.

624051420639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208017140216.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 624051420639 in words is "six hundred twenty-four billion, fifty-one million, four hundred twenty thousand, six hundred thirty-nine".