7863151060921 has 8 divisors (see below), whose sum is σ = 8514793416584. Its totient is φ = 7218192216960.

The previous prime is 7863151060879. The next prime is 7863151060937. The reversal of 7863151060921 is 1290601513687.

It can be written as a sum of positive squares in 4 ways, for example, as 372666295296 + 7490484765625 = 610464^2 + 2736875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7863151060921 - 2³⁵ = 7828791322553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7863151060021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670875476 + ... + 1670880181.

It is an arithmetic number, because the mean of its divisors is an integer number (1064349177073).

Almost surely, 2^{7863151060921} is an apocalyptic number.

It is an amenable number.

7863151060921 is a deficient number, since it is larger than the sum of its proper divisors (651642355663).

7863151060921 is a wasteful number, since it uses less digits than its factorization.

7863151060921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341755851.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 7863151060921 in words is "seven trillion, eight hundred sixty-three billion, one hundred fifty-one million, sixty thousand, nine hundred twenty-one".