3842815778450 has 24 divisors (see below), whose sum is σ = 7797422562480. Its totient is φ = 1397387555600.

The previous prime is 3842815778429. The next prime is 3842815778491. The reversal of 3842815778450 is 548775182483.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3493468340 + ... + 3493469439.

It is an arithmetic number, because the mean of its divisors is an integer number (324892606770).

Almost surely, 2^{3842815778450} is an apocalyptic number.

3842815778450 is an abundant number, since it is smaller than the sum of its proper divisors (3954606784030).

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

3842815778450 is a wasteful number, since it uses less digits than its factorization.

3842815778450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986937802 (or 6986937797 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 62.

The spelling of 3842815778450 in words is "three trillion, eight hundred forty-two billion, eight hundred fifteen million, seven hundred seventy-eight thousand, four hundred fifty".