7950887213257 has 4 divisors (see below), whose sum is σ = 8003542095616. Its totient is φ = 7898232330900.

The previous prime is 7950887213249. The next prime is 7950887213261. The reversal of 7950887213257 is 7523127880597.

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 not a de Polignac number, because 7950887213257 - 2³ = 7950887213249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7950887213657) 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, 26327440953 + ... + 26327441254.

It is an arithmetic number, because the mean of its divisors is an integer number (2000885523904).

Almost surely, 2^{7950887213257} is an apocalyptic number.

It is an amenable number.

7950887213257 is a deficient number, since it is larger than the sum of its proper divisors (52654882359).

7950887213257 is a wasteful number, since it uses less digits than its factorization.

7950887213257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52654882358.

The product of its (nonzero) digits is 59270400, while the sum is 64.

The spelling of 7950887213257 in words is "seven trillion, nine hundred fifty billion, eight hundred eighty-seven million, two hundred thirteen thousand, two hundred fifty-seven".