378739086639558 has 8 divisors (see below), whose sum is σ = 757478173279128. Its totient is φ = 126246362213184.

The previous prime is 378739086639523. The next prime is 378739086639583. The reversal of 378739086639558 is 855936680937873.

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

378739086639558 is an admirable number.

It is a super-2 number, since 2×378739086639558² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31561590553291 + ... + 31561590553302.

It is an arithmetic number, because the mean of its divisors is an integer number (94684771659891).

Almost surely, 2^{378739086639558} is an apocalyptic number.

378739086639558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

378739086639558 is a wasteful number, since it uses less digits than its factorization.

378739086639558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63123181106598.

The product of its (nonzero) digits is 49380710400, while the sum is 87.

The spelling of 378739086639558 in words is "three hundred seventy-eight trillion, seven hundred thirty-nine billion, eighty-six million, six hundred thirty-nine thousand, five hundred fifty-eight".