641566426016 has 24 divisors (see below), whose sum is σ = 1263104144064. Its totient is φ = 320778072000.

The previous prime is 641566426001. The next prime is 641566426031. The reversal of 641566426016 is 610624665146.

It is an interprime number because it is at equal distance from previous prime (641566426001) and next prime (641566426031).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2593751 + ... + 2830313.

It is an arithmetic number, because the mean of its divisors is an integer number (52629339336).

Almost surely, 2^641566426016 is an apocalyptic number.

It is an amenable number.

641566426016 is a deficient number, since it is larger than the sum of its proper divisors (621537718048).

641566426016 is a wasteful number, since it uses less digits than its factorization.

641566426016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321324 (or 321316 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 641566426016 in words is "six hundred forty-one billion, five hundred sixty-six million, four hundred twenty-six thousand, sixteen".