51659429500 has 192 divisors, whose sum is σ = 130912733952. Its totient is φ = 17443200000.

The previous prime is 51659429461. The next prime is 51659429539. The reversal of 51659429500 is 592495615.

It is an interprime number because it is at equal distance from previous prime (51659429461) and next prime (51659429539).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112059270 + ... + 112059730.

It is an arithmetic number, because the mean of its divisors is an integer number (681837156).

Almost surely, 2^51659429500 is an apocalyptic number.

51659429500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51659429500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65456366976).

51659429500 is an abundant number, since it is smaller than the sum of its proper divisors (79253304452).

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

51659429500 is a wasteful number, since it uses less digits than its factorization.

51659429500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 51659429500 in words is "fifty-one billion, six hundred fifty-nine million, four hundred twenty-nine thousand, five hundred".