775275807551 has 8 divisors (see below), whose sum is σ = 886102702080. Its totient is φ = 664467214968.

The previous prime is 775275807547. The next prime is 775275807571. The reversal of 775275807551 is 155708572577.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 775275807551 - 2² = 775275807547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775275807571) 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, 4484591 + ... + 4654256.

It is an arithmetic number, because the mean of its divisors is an integer number (110762837760).

Almost surely, 2^775275807551 is an apocalyptic number.

775275807551 is a deficient number, since it is larger than the sum of its proper divisors (110826894529).

775275807551 is a wasteful number, since it uses less digits than its factorization.

775275807551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150973.

The product of its (nonzero) digits is 24010000, while the sum is 59.

The spelling of 775275807551 in words is "seven hundred seventy-five billion, two hundred seventy-five million, eight hundred seven thousand, five hundred fifty-one".