51671007544 has 32 divisors (see below), whose sum is σ = 110473085520. Its totient is φ = 22445323776.

The previous prime is 51671007541. The next prime is 51671007559. The reversal of 51671007544 is 44570017615.

It is a super-2 number, since 2×51671007544² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51671007497 and 51671007506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51671007541) 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, 14611074 + ... + 14614609.

Almost surely, 2^51671007544 is an apocalyptic number.

It is an amenable number.

51671007544 is an abundant number, since it is smaller than the sum of its proper divisors (58802077976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51671007544 is a wasteful number, since it uses less digits than its factorization.

51671007544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29225719 (or 29225715 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 51671007544 in words is "fifty-one billion, six hundred seventy-one million, seven thousand, five hundred forty-four".