71779298409401 has 4 divisors (see below), whose sum is σ = 78304689173904. Its totient is φ = 65253907644900.

The previous prime is 71779298409253. The next prime is 71779298409433. The reversal of 71779298409401 is 10490489297717.

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 71779298409401 - 2³⁰ = 71778224667577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71779298499401) 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, 3262695382235 + ... + 3262695382256.

It is an arithmetic number, because the mean of its divisors is an integer number (19576172293476).

Almost surely, 2^{71779298409401} is an apocalyptic number.

It is an amenable number.

71779298409401 is a deficient number, since it is larger than the sum of its proper divisors (6525390764503).

71779298409401 is a wasteful number, since it uses less digits than its factorization.

71779298409401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525390764502.

The product of its (nonzero) digits is 64012032, while the sum is 68.

The spelling of 71779298409401 in words is "seventy-one trillion, seven hundred seventy-nine billion, two hundred ninety-eight million, four hundred nine thousand, four hundred one".