51151570345811 has 4 divisors (see below), whose sum is σ = 55086306526272. Its totient is φ = 47216834165352.

The previous prime is 51151570345721. The next prime is 51151570345823. The reversal of 51151570345811 is 11854307515115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51151570345811 is a prime.

It is a super-2 number, since 2×51151570345811² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51151570345111) 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, 1967368090211 + ... + 1967368090236.

It is an arithmetic number, because the mean of its divisors is an integer number (13771576631568).

Almost surely, 2^{51151570345811} is an apocalyptic number.

51151570345811 is a deficient number, since it is larger than the sum of its proper divisors (3934736180461).

51151570345811 is a wasteful number, since it uses less digits than its factorization.

51151570345811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934736180460.

The product of its (nonzero) digits is 420000, while the sum is 47.

The spelling of 51151570345811 in words is "fifty-one trillion, one hundred fifty-one billion, five hundred seventy million, three hundred forty-five thousand, eight hundred eleven".