7951471251361 has 12 divisors (see below), whose sum is σ = 8740880615572. Its totient is φ = 7227920700000.

The previous prime is 7951471251329. The next prime is 7951471251407. The reversal of 7951471251361 is 1631521741597.

It can be written as a sum of positive squares in 2 ways, for example, as 5000053766400 + 2951417484961 = 2236080^2 + 1717969^2 .

It is not a de Polignac number, because 7951471251361 - 2⁵ = 7951471251329 is a prime.

It is a super-2 number, since 2×7951471251361² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7951471251299 and 7951471251308.

It is not an unprimeable number, because it can be changed into a prime (7951471254361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1858350 + ... + 4399591.

Almost surely, 2^{7951471251361} is an apocalyptic number.

It is an amenable number.

7951471251361 is a deficient number, since it is larger than the sum of its proper divisors (789409364211).

7951471251361 is a wasteful number, since it uses less digits than its factorization.

7951471251361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268464 (or 6268453 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 52.

The spelling of 7951471251361 in words is "seven trillion, nine hundred fifty-one billion, four hundred seventy-one million, two hundred fifty-one thousand, three hundred sixty-one".