378820274461 has 4 divisors (see below), whose sum is σ = 380615631424. Its totient is φ = 377024917500.

The previous prime is 378820274447. The next prime is 378820274501. The reversal of 378820274461 is 164472028873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378820274461 - 2²⁵ = 378786720029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378820274399 and 378820274408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378820278461) 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 in 3 ways as a sum of consecutive naturals, for example, 897678165 + ... + 897678586.

It is an arithmetic number, because the mean of its divisors is an integer number (95153907856).

Almost surely, 2^378820274461 is an apocalyptic number.

It is an amenable number.

378820274461 is a deficient number, since it is larger than the sum of its proper divisors (1795356963).

378820274461 is a wasteful number, since it uses less digits than its factorization.

378820274461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795356962.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 378820274461 in words is "three hundred seventy-eight billion, eight hundred twenty million, two hundred seventy-four thousand, four hundred sixty-one".