7861909228263 has 8 divisors (see below), whose sum is σ = 11647272930800. Its totient is φ = 5241272818824.

The previous prime is 7861909228253. The next prime is 7861909228309. The reversal of 7861909228263 is 3628229091687.

7861909228263 is a `hidden beast` number, since 7 + 8 + 61 + 90 + 9 + 228 + 263 = 666.

It is not a de Polignac number, because 7861909228263 - 2⁵ = 7861909228231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7861909228263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7861909228253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145590911608 + ... + 145590911661.

It is an arithmetic number, because the mean of its divisors is an integer number (1455909116350).

Almost surely, 2^{7861909228263} is an apocalyptic number.

7861909228263 is a deficient number, since it is larger than the sum of its proper divisors (3785363702537).

7861909228263 is a wasteful number, since it uses less digits than its factorization.

7861909228263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291181823278 (or 291181823272 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 7861909228263 in words is "seven trillion, eight hundred sixty-one billion, nine hundred nine million, two hundred twenty-eight thousand, two hundred sixty-three".