1920771686401 has 8 divisors (see below), whose sum is σ = 1944711385344. Its totient is φ = 1896850984560.

The previous prime is 1920771686381. The next prime is 1920771686417. The reversal of 1920771686401 is 1046861770291.

It is a happy number.

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

It is not a de Polignac number, because 1920771686401 - 2¹⁹ = 1920771162113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920772686401) 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, 4545745 + ... + 4950286.

It is an arithmetic number, because the mean of its divisors is an integer number (243088923168).

Almost surely, 2^{1920771686401} is an apocalyptic number.

It is an amenable number.

1920771686401 is a deficient number, since it is larger than the sum of its proper divisors (23939698943).

1920771686401 is an equidigital number, since it uses as much as digits as its factorization.

1920771686401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9498551.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 1920771686401 in words is "one trillion, nine hundred twenty billion, seven hundred seventy-one million, six hundred eighty-six thousand, four hundred one".