775538194497 has 8 divisors (see below), whose sum is σ = 1128055555680. Its totient is φ = 470023148160.

The previous prime is 775538194493. The next prime is 775538194513. The reversal of 775538194497 is 794491835577.

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

It is not a de Polignac number, because 775538194497 - 2² = 775538194493 is a prime.

It is a super-2 number, since 2×775538194497² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (775538194493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11750578672 + ... + 11750578737.

It is an arithmetic number, because the mean of its divisors is an integer number (141006944460).

Almost surely, 2^775538194497 is an apocalyptic number.

It is an amenable number.

775538194497 is a deficient number, since it is larger than the sum of its proper divisors (352517361183).

775538194497 is a wasteful number, since it uses less digits than its factorization.

775538194497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23501157423.

The product of its digits is 266716800, while the sum is 69.

The spelling of 775538194497 in words is "seven hundred seventy-five billion, five hundred thirty-eight million, one hundred ninety-four thousand, four hundred ninety-seven".