7890748421427 has 6 divisors (see below), whose sum is σ = 11397747719852. Its totient is φ = 5260498947612.

The previous prime is 7890748421389. The next prime is 7890748421441. The reversal of 7890748421427 is 7241248470987.

7890748421427 is a `hidden beast` number, since 7 + 8 + 9 + 0 + 7 + 484 + 2 + 142 + 7 = 666.

It is not a de Polignac number, because 7890748421427 - 2¹⁹ = 7890747897139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7890748421527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 438374912293 + ... + 438374912310.

Almost surely, 2^{7890748421427} is an apocalyptic number.

7890748421427 is a deficient number, since it is larger than the sum of its proper divisors (3506999298425).

7890748421427 is a wasteful number, since it uses less digits than its factorization.

7890748421427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876749824609 (or 876749824606 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 63.

The spelling of 7890748421427 in words is "seven trillion, eight hundred ninety billion, seven hundred forty-eight million, four hundred twenty-one thousand, four hundred twenty-seven".