1066021026254 has 4 divisors (see below), whose sum is σ = 1599031539384. Its totient is φ = 533010513126.

The previous prime is 1066021026241. The next prime is 1066021026277. The reversal of 1066021026254 is 4526201206601.

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

It is a super-2 number, since 2×1066021026254² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266505256562 + ... + 266505256565.

It is an arithmetic number, because the mean of its divisors is an integer number (399757884846).

Almost surely, 2^{1066021026254} is an apocalyptic number.

1066021026254 is a deficient number, since it is larger than the sum of its proper divisors (533010513130).

1066021026254 is an equidigital number, since it uses as much as digits as its factorization.

1066021026254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533010513129.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 1066021026254 in words is "one trillion, sixty-six billion, twenty-one million, twenty-six thousand, two hundred fifty-four".