378638877858 has 16 divisors (see below), whose sum is σ = 758161404000. Its totient is φ = 126065684576.

The previous prime is 378638877833. The next prime is 378638877937. The reversal of 378638877858 is 858778836873.

It is a super-3 number, since 3×378638877858³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36813108 + ... + 36823391.

It is an arithmetic number, because the mean of its divisors is an integer number (47385087750).

Almost surely, 2^378638877858 is an apocalyptic number.

378638877858 is an abundant number, since it is smaller than the sum of its proper divisors (379522526142).

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

378638877858 is a wasteful number, since it uses less digits than its factorization.

378638877858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73637361.

The product of its digits is 3034644480, while the sum is 78.

The spelling of 378638877858 in words is "three hundred seventy-eight billion, six hundred thirty-eight million, eight hundred seventy-seven thousand, eight hundred fifty-eight".