7975339769949 has 4 divisors (see below), whose sum is σ = 10633786359936. Its totient is φ = 5316893179964.

The previous prime is 7975339769939. The next prime is 7975339769963. The reversal of 7975339769949 is 9499679335797.

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-7975339769949 is a prime.

It is a super-2 number, since 2×7975339769949² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7975339769939) 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, 1329223294989 + ... + 1329223294994.

It is an arithmetic number, because the mean of its divisors is an integer number (2658446589984).

Almost surely, 2^{7975339769949} is an apocalyptic number.

It is an amenable number.

7975339769949 is a deficient number, since it is larger than the sum of its proper divisors (2658446589987).

7975339769949 is a wasteful number, since it uses less digits than its factorization.

7975339769949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658446589986.

The product of its digits is 21874111560, while the sum is 87.

The spelling of 7975339769949 in words is "seven trillion, nine hundred seventy-five billion, three hundred thirty-nine million, seven hundred sixty-nine thousand, nine hundred forty-nine".