7125881818893 has 4 divisors (see below), whose sum is σ = 9501175758528. Its totient is φ = 4750587879260.

The previous prime is 7125881818883. The next prime is 7125881818897. The reversal of 7125881818893 is 3988181885217.

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 7125881818893 - 2⁶ = 7125881818829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7125881818897) 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, 1187646969813 + ... + 1187646969818.

It is an arithmetic number, because the mean of its divisors is an integer number (2375293939632).

Almost surely, 2^{7125881818893} is an apocalyptic number.

It is an amenable number.

7125881818893 is a deficient number, since it is larger than the sum of its proper divisors (2375293939635).

7125881818893 is a wasteful number, since it uses less digits than its factorization.

7125881818893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375293939634.

The product of its digits is 61931520, while the sum is 69.

The spelling of 7125881818893 in words is "seven trillion, one hundred twenty-five billion, eight hundred eighty-one million, eight hundred eighteen thousand, eight hundred ninety-three".