378621672101 has 2 divisors, whose sum is σ = 378621672102. Its totient is φ = 378621672100.

The previous prime is 378621672053. The next prime is 378621672133. The reversal of 378621672101 is 101276126873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239306856100 + 139314816001 = 489190^2 + 373249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378621672101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378621672901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189310836050 + 189310836051.

It is an arithmetic number, because the mean of its divisors is an integer number (189310836051).

Almost surely, 2^378621672101 is an apocalyptic number.

It is an amenable number.

378621672101 is a deficient number, since it is larger than the sum of its proper divisors (1).

378621672101 is an equidigital number, since it uses as much as digits as its factorization.

378621672101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

Adding to 378621672101 its reverse (101276126873), we get a palindrome (479897798974).

The spelling of 378621672101 in words is "three hundred seventy-eight billion, six hundred twenty-one million, six hundred seventy-two thousand, one hundred one".