1020807421549 has 8 divisors (see below), whose sum is σ = 1058941941120. Its totient is φ = 983303224800.

The previous prime is 1020807421531. The next prime is 1020807421559. The reversal of 1020807421549 is 9451247080201.

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 1020807421549 - 2⁹ = 1020807421037 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 (1020807421559) 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, 157577407 + ... + 157583884.

It is an arithmetic number, because the mean of its divisors is an integer number (132367742640).

Almost surely, 2^{1020807421549} is an apocalyptic number.

It is an amenable number.

1020807421549 is a deficient number, since it is larger than the sum of its proper divisors (38134519571).

1020807421549 is an equidigital number, since it uses as much as digits as its factorization.

1020807421549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315161411.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 1020807421549 in words is "one trillion, twenty billion, eight hundred seven million, four hundred twenty-one thousand, five hundred forty-nine".