51269879232 has 1120 divisors, whose sum is σ = 194305757184. Its totient is φ = 13138329600.

The previous prime is 51269879231. The next prime is 51269879279. The reversal of 51269879232 is 23297896215.

51269879232 is a `hidden beast` number, since 512 + 6 + 9 + 8 + 7 + 92 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3265920) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51269879231) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 528555408 + ... + 528555504.

Almost surely, 2^51269879232 is an apocalyptic number.

51269879232 is a gapful number since it is divisible by the number (52) 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 51269879232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97152878592).

51269879232 is an abundant number, since it is smaller than the sum of its proper divisors (143035877952).

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

51269879232 is a wasteful number, since it uses less digits than its factorization.

51269879232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 180 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 51269879232 in words is "fifty-one billion, two hundred sixty-nine million, eight hundred seventy-nine thousand, two hundred thirty-two".