71779298409402 has 8 divisors (see below), whose sum is σ = 143558596818816. Its totient is φ = 23926432803132.

The previous prime is 71779298409253. The next prime is 71779298409433. The reversal of 71779298409402 is 20490489297717.

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

71779298409402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5981608200778 + ... + 5981608200789.

It is an arithmetic number, because the mean of its divisors is an integer number (17944824602352).

Almost surely, 2^{71779298409402} is an apocalyptic number.

71779298409402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71779298409402 is a wasteful number, since it uses less digits than its factorization.

71779298409402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963216401572.

The product of its (nonzero) digits is 128024064, while the sum is 69.

The spelling of 71779298409402 in words is "seventy-one trillion, seven hundred seventy-nine billion, two hundred ninety-eight million, four hundred nine thousand, four hundred two".