3812920128901 has 8 divisors (see below), whose sum is σ = 4122199197144. Its totient is φ = 3505923563520.

The previous prime is 3812920128833. The next prime is 3812920128917. The reversal of 3812920128901 is 1098210292183.

It is a Cunningham number, because it is equal to 1952670²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 271180562500 + 3541739566401 = 520750^2 + 1881951^2 .

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 3812920128901 - 2¹¹ = 3812920126853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3812920128931) 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, 570622240 + ... + 570628921.

It is an arithmetic number, because the mean of its divisors is an integer number (515274899643).

Almost surely, 2^{3812920128901} is an apocalyptic number.

It is an amenable number.

3812920128901 is a deficient number, since it is larger than the sum of its proper divisors (309279068243).

3812920128901 is a wasteful number, since it uses less digits than its factorization.

3812920128901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141251431.

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 3812920128901 in words is "three trillion, eight hundred twelve billion, nine hundred twenty million, one hundred twenty-eight thousand, nine hundred one".