378271640293 has 2 divisors, whose sum is σ = 378271640294. Its totient is φ = 378271640292.

The previous prime is 378271640249. The next prime is 378271640377. The reversal of 378271640293 is 392046172873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370878564004 + 7393076289 = 608998^2 + 85983^2 .

It is a cyclic number.

It is not a de Polignac number, because 378271640293 - 2²⁵ = 378238085861 is a prime.

It is a super-2 number, since 2×378271640293² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 378271640293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378271640233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189135820146 + 189135820147.

It is an arithmetic number, because the mean of its divisors is an integer number (189135820147).

Almost surely, 2^378271640293 is an apocalyptic number.

It is an amenable number.

378271640293 is a deficient number, since it is larger than the sum of its proper divisors (1).

378271640293 is an equidigital number, since it uses as much as digits as its factorization.

378271640293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 378271640293 in words is "three hundred seventy-eight billion, two hundred seventy-one million, six hundred forty thousand, two hundred ninety-three".