7863146820381 has 4 divisors (see below), whose sum is σ = 10484195760512. Its totient is φ = 5242097880252.

The previous prime is 7863146820367. The next prime is 7863146820383. The reversal of 7863146820381 is 1830286413687.

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 not a de Polignac number, because 7863146820381 - 2⁶ = 7863146820317 is a prime.

It is a super-2 number, since 2×7863146820381² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7863146820383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310524470061 + ... + 1310524470066.

It is an arithmetic number, because the mean of its divisors is an integer number (2621048940128).

Almost surely, 2^{7863146820381} is an apocalyptic number.

It is an amenable number.

7863146820381 is a deficient number, since it is larger than the sum of its proper divisors (2621048940131).

7863146820381 is a wasteful number, since it uses less digits than its factorization.

7863146820381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621048940130.

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 7863146820381 in words is "seven trillion, eight hundred sixty-three billion, one hundred forty-six million, eight hundred twenty thousand, three hundred eighty-one".