75277269447997 has 4 divisors (see below), whose sum is σ = 75280870735200. Its totient is φ = 75273668160796.

The previous prime is 75277269447983. The next prime is 75277269448019. The reversal of 75277269447997 is 79974496277257.

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 a de Polignac number, because none of the positive numbers 2^k-75277269447997 is a prime.

It is a super-4 number, since 4×75277269447997⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75277269447907) 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, 1800612247 + ... + 1800654052.

It is an arithmetic number, because the mean of its divisors is an integer number (18820217683800).

Almost surely, 2^{75277269447997} is an apocalyptic number.

It is an amenable number.

75277269447997 is a deficient number, since it is larger than the sum of its proper divisors (3601287203).

75277269447997 is a wasteful number, since it uses less digits than its factorization.

75277269447997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601287202.

The product of its digits is 23524421760, while the sum is 85.

The spelling of 75277269447997 in words is "seventy-five trillion, two hundred seventy-seven billion, two hundred sixty-nine million, four hundred forty-seven thousand, nine hundred ninety-seven".