75801099551 has 4 divisors (see below), whose sum is σ = 78414930600. Its totient is φ = 73187268504.

The previous prime is 75801099509. The next prime is 75801099559. The reversal of 75801099551 is 15599010857.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75801099551 - 2¹⁸ = 75800837407 is a prime.

It is a super-2 number, since 2×75801099551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75801099551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75801099559) 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, 1306915481 + ... + 1306915538.

It is an arithmetic number, because the mean of its divisors is an integer number (19603732650).

Almost surely, 2^75801099551 is an apocalyptic number.

75801099551 is a deficient number, since it is larger than the sum of its proper divisors (2613831049).

75801099551 is a wasteful number, since it uses less digits than its factorization.

75801099551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613831048.

The product of its (nonzero) digits is 567000, while the sum is 50.

The spelling of 75801099551 in words is "seventy-five billion, eight hundred one million, ninety-nine thousand, five hundred fifty-one".