66026220752658 has 16 divisors (see below), whose sum is σ = 132071450145120. Its totient is φ = 22005572144256.

The previous prime is 66026220752593. The next prime is 66026220752669. The reversal of 66026220752658 is 85625702262066.

It is a junction number, because it is equal to n+sod(n) for n = 66026220752598 and 66026220752607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791981503 + ... + 792064866.

It is an arithmetic number, because the mean of its divisors is an integer number (8254465634070).

Almost surely, 2^{66026220752658} is an apocalyptic number.

66026220752658 is an abundant number, since it is smaller than the sum of its proper divisors (66045229392462).

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

66026220752658 is a wasteful number, since it uses less digits than its factorization.

66026220752658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584053321.

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 66026220752658 in words is "sixty-six trillion, twenty-six billion, two hundred twenty million, seven hundred fifty-two thousand, six hundred fifty-eight".