3820675779978 has 16 divisors (see below), whose sum is σ = 7644267025056. Its totient is φ = 1273072682480.

The previous prime is 3820675779971. The next prime is 3820675780043. The reversal of 3820675779978 is 8799775760283.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3820675779971) 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, 121460676 + ... + 121492127.

It is an arithmetic number, because the mean of its divisors is an integer number (477766689066).

Almost surely, 2^{3820675779978} is an apocalyptic number.

3820675779978 is an abundant number, since it is smaller than the sum of its proper divisors (3823591245078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3820675779978 is a wasteful number, since it uses less digits than its factorization.

3820675779978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242955429.

The product of its (nonzero) digits is 2240421120, while the sum is 78.

The spelling of 3820675779978 in words is "three trillion, eight hundred twenty billion, six hundred seventy-five million, seven hundred seventy-nine thousand, nine hundred seventy-eight".