378860881801 has 2 divisors, whose sum is σ = 378860881802. Its totient is φ = 378860881800.

The previous prime is 378860881787. The next prime is 378860881807. The reversal of 378860881801 is 108188068873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327819228025 + 51041653776 = 572555^2 + 225924^2 .

It is an emirp because it is prime and its reverse (108188068873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378860881801 - 2⁷ = 378860881673 is a prime.

It is not a weakly prime, because it can be changed into another prime (378860881807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189430440900 + 189430440901.

It is an arithmetic number, because the mean of its divisors is an integer number (189430440901).

Almost surely, 2^378860881801 is an apocalyptic number.

It is an amenable number.

378860881801 is a deficient number, since it is larger than the sum of its proper divisors (1).

378860881801 is an equidigital number, since it uses as much as digits as its factorization.

378860881801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4128768, while the sum is 58.

The spelling of 378860881801 in words is "three hundred seventy-eight billion, eight hundred sixty million, eight hundred eighty-one thousand, eight hundred one".