7957980053447 has 4 divisors (see below), whose sum is σ = 7995695598936. Its totient is φ = 7920264507960.

The previous prime is 7957980053407. The next prime is 7957980053539. The reversal of 7957980053447 is 7443500897597.

It is a happy number.

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 7957980053447 - 2¹⁶ = 7957979987911 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 (7957980053407) 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, 18857772428 + ... + 18857772849.

It is an arithmetic number, because the mean of its divisors is an integer number (1998923899734).

Almost surely, 2^{7957980053447} is an apocalyptic number.

7957980053447 is a deficient number, since it is larger than the sum of its proper divisors (37715545489).

7957980053447 is a wasteful number, since it uses less digits than its factorization.

7957980053447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37715545488.

The product of its (nonzero) digits is 266716800, while the sum is 68.

The spelling of 7957980053447 in words is "seven trillion, nine hundred fifty-seven billion, nine hundred eighty million, fifty-three thousand, four hundred forty-seven".