1622856879395 has 16 divisors (see below), whose sum is σ = 1966873370112. Its totient is φ = 1285324233600.

The previous prime is 1622856879349. The next prime is 1622856879433. The reversal of 1622856879395 is 5939786582261.

It is a Cunningham number, because it is equal to 1273914²-1.

It is not a de Polignac number, because 1622856879395 - 2¹⁴ = 1622856863011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6242174 + ... + 6496956.

It is an arithmetic number, because the mean of its divisors is an integer number (122929585632).

Almost surely, 2^{1622856879395} is an apocalyptic number.

1622856879395 is a deficient number, since it is larger than the sum of its proper divisors (344016490717).

1622856879395 is a wasteful number, since it uses less digits than its factorization.

1622856879395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267502.

The product of its digits is 391910400, while the sum is 71.

The spelling of 1622856879395 in words is "one trillion, six hundred twenty-two billion, eight hundred fifty-six million, eight hundred seventy-nine thousand, three hundred ninety-five".