51161340475 has 12 divisors (see below), whose sum is σ = 72502928464. Its totient is φ = 35082061920.

The previous prime is 51161340469. The next prime is 51161340481. The reversal of 51161340475 is 57404316115.

It is an interprime number because it is at equal distance from previous prime (51161340469) and next prime (51161340481).

It is not a de Polignac number, because 51161340475 - 2³ = 51161340467 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146175084 + ... + 146175433.

Almost surely, 2^51161340475 is an apocalyptic number.

51161340475 is a deficient number, since it is larger than the sum of its proper divisors (21341587989).

51161340475 is a wasteful number, since it uses less digits than its factorization.

51161340475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292350534 (or 292350529 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 51161340475 in words is "fifty-one billion, one hundred sixty-one million, three hundred forty thousand, four hundred seventy-five".