1970021643077 has 8 divisors (see below), whose sum is σ = 1993878322464. Its totient is φ = 1946167856208.

The previous prime is 1970021643041. The next prime is 1970021643101. The reversal of 1970021643077 is 7703461200791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1970021643077 - 2⁶ = 1970021643013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970021649077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663263 + ... + 2092835.

It is an arithmetic number, because the mean of its divisors is an integer number (249234790308).

Almost surely, 2^{1970021643077} is an apocalyptic number.

It is an amenable number.

1970021643077 is a deficient number, since it is larger than the sum of its proper divisors (23856679387).

1970021643077 is a wasteful number, since it uses less digits than its factorization.

1970021643077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446259.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 1970021643077 in words is "one trillion, nine hundred seventy billion, twenty-one million, six hundred forty-three thousand, seventy-seven".