378890277779 has 16 divisors (see below), whose sum is σ = 409238333952. Its totient is φ = 348715227168.

The previous prime is 378890277763. The next prime is 378890277781. The reversal of 378890277779 is 977772098873.

It is a cyclic number.

It is not a de Polignac number, because 378890277779 - 2⁴ = 378890277763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378890777779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7842752 + ... + 7890914.

It is an arithmetic number, because the mean of its divisors is an integer number (25577395872).

Almost surely, 2^378890277779 is an apocalyptic number.

378890277779 is a deficient number, since it is larger than the sum of its proper divisors (30348056173).

378890277779 is a wasteful number, since it uses less digits than its factorization.

378890277779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49946.

The product of its (nonzero) digits is 522764928, while the sum is 74.

The spelling of 378890277779 in words is "three hundred seventy-eight billion, eight hundred ninety million, two hundred seventy-seven thousand, seven hundred seventy-nine".