51091514546 has 4 divisors (see below), whose sum is σ = 76637271822. Its totient is φ = 25545757272.

The previous prime is 51091514543. The next prime is 51091514557. The reversal of 51091514546 is 64541519015.

51091514546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 49807080625 + 1284433921 = 223175^2 + 35839^2 .

It is a super-2 number, since 2×51091514546² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51091514543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772878635 + ... + 12772878638.

Almost surely, 2^51091514546 is an apocalyptic number.

51091514546 is a deficient number, since it is larger than the sum of its proper divisors (25545757276).

51091514546 is a wasteful number, since it uses less digits than its factorization.

51091514546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25545757275.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 51091514546 in words is "fifty-one billion, ninety-one million, five hundred fourteen thousand, five hundred forty-six".