66103251426 has 72 divisors (see below), whose sum is σ = 147281844060. Its totient is φ = 21426215616.

The previous prime is 66103251421. The next prime is 66103251433. The reversal of 66103251426 is 62415230166.

66103251426 is a `hidden beast` number, since 6 + 610 + 3 + 2 + 5 + 14 + 26 = 666.

66103251426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59846283225 + 6256968201 = 244635^2 + 79101^2 .

It is not an unprimeable number, because it can be changed into a prime (66103251421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6237340 + ... + 6247928.

Almost surely, 2^66103251426 is an apocalyptic number.

66103251426 is an abundant number, since it is smaller than the sum of its proper divisors (81178592634).

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

66103251426 is a wasteful number, since it uses less digits than its factorization.

66103251426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10848 (or 10798 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 66103251426 in words is "sixty-six billion, one hundred three million, two hundred fifty-one thousand, four hundred twenty-six".