51061501356123 has 8 divisors (see below), whose sum is σ = 68106949419600. Its totient is φ = 34028527098368.

The previous prime is 51061501355989. The next prime is 51061501356133. The reversal of 51061501356123 is 32165310516015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51061501356123 - 2¹⁷ = 51061501225051 is a prime.

It is a super-2 number, since 2×51061501356123² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51061501356133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3118441878 + ... + 3118458251.

It is an arithmetic number, because the mean of its divisors is an integer number (8513368677450).

Almost surely, 2^{51061501356123} is an apocalyptic number.

51061501356123 is a deficient number, since it is larger than the sum of its proper divisors (17045448063477).

51061501356123 is a wasteful number, since it uses less digits than its factorization.

51061501356123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236902861.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 51061501356123 in words is "fifty-one trillion, sixty-one billion, five hundred one million, three hundred fifty-six thousand, one hundred twenty-three".