51677508340 has 24 divisors (see below), whose sum is σ = 114234492960. Its totient is φ = 19583055648.

The previous prime is 51677508319. The next prime is 51677508341. The reversal of 51677508340 is 4380577615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51677508341) 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, 67996342 + ... + 67997101.

It is an arithmetic number, because the mean of its divisors is an integer number (4759770540).

Almost surely, 2^51677508340 is an apocalyptic number.

It is an amenable number.

51677508340 is an abundant number, since it is smaller than the sum of its proper divisors (62556984620).

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

51677508340 is a wasteful number, since it uses less digits than its factorization.

51677508340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135993471 (or 135993469 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 51677508340 in words is "fifty-one billion, six hundred seventy-seven million, five hundred eight thousand, three hundred forty".