51411560258477 has 4 divisors (see below), whose sum is σ = 51411692523900. Its totient is φ = 51411427993056.

The previous prime is 51411560258381. The next prime is 51411560258479. The reversal of 51411560258477 is 77485206511415.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21072681069001 + 30338879189476 = 4590499^2 + 5508074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51411560258477 is a prime.

It is a super-2 number, since 2×51411560258477² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51411560258479) 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, 65547938 + ... + 66327635.

It is an arithmetic number, because the mean of its divisors is an integer number (12852923130975).

Almost surely, 2^{51411560258477} is an apocalyptic number.

It is an amenable number.

51411560258477 is a deficient number, since it is larger than the sum of its proper divisors (132265423).

51411560258477 is a wasteful number, since it uses less digits than its factorization.

51411560258477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132265422.

The product of its (nonzero) digits is 9408000, while the sum is 56.

The spelling of 51411560258477 in words is "fifty-one trillion, four hundred eleven billion, five hundred sixty million, two hundred fifty-eight thousand, four hundred seventy-seven".