378912909337 has 4 divisors (see below), whose sum is σ = 395387383680. Its totient is φ = 362438434996.

The previous prime is 378912909209. The next prime is 378912909371. The reversal of 378912909337 is 733909219873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733909219873 = 21019 ⋅34916467.

It is a cyclic number.

It is not a de Polignac number, because 378912909337 - 2⁷ = 378912909209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378912909377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237237137 + ... + 8237237182.

It is an arithmetic number, because the mean of its divisors is an integer number (98846845920).

Almost surely, 2^378912909337 is an apocalyptic number.

It is an amenable number.

378912909337 is a deficient number, since it is larger than the sum of its proper divisors (16474474343).

378912909337 is a wasteful number, since it uses less digits than its factorization.

378912909337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16474474342.

The product of its (nonzero) digits is 15431472, while the sum is 61.

The spelling of 378912909337 in words is "three hundred seventy-eight billion, nine hundred twelve million, nine hundred nine thousand, three hundred thirty-seven".