51265632450 has 24 divisors (see below), whose sum is σ = 127138768848. Its totient is φ = 13670835280.

The previous prime is 51265632373. The next prime is 51265632469. The reversal of 51265632450 is 5423656215.

It is a junction number, because it is equal to n+sod(n) for n = 51265632399 and 51265632408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170885292 + ... + 170885591.

It is an arithmetic number, because the mean of its divisors is an integer number (5297448702).

Almost surely, 2^51265632450 is an apocalyptic number.

51265632450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51265632450 is an abundant number, since it is smaller than the sum of its proper divisors (75873136398).

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

51265632450 is a wasteful number, since it uses less digits than its factorization.

51265632450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341770898 (or 341770893 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 51265632450 in words is "fifty-one billion, two hundred sixty-five million, six hundred thirty-two thousand, four hundred fifty".