378811466431 has 2 divisors, whose sum is σ = 378811466432. Its totient is φ = 378811466430.

The previous prime is 378811466389. The next prime is 378811466443. The reversal of 378811466431 is 134664118873.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378811466431 - 2¹³ = 378811458239 is a prime.

It is a super-2 number, since 2×378811466431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378811466461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189405733215 + 189405733216.

It is an arithmetic number, because the mean of its divisors is an integer number (189405733216).

Almost surely, 2^378811466431 is an apocalyptic number.

378811466431 is a deficient number, since it is larger than the sum of its proper divisors (1).

378811466431 is an equidigital number, since it uses as much as digits as its factorization.

378811466431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The spelling of 378811466431 in words is "three hundred seventy-eight billion, eight hundred eleven million, four hundred sixty-six thousand, four hundred thirty-one".