51740840448 has 400 divisors, whose sum is σ = 174326074560. Its totient is φ = 15134515200.

The previous prime is 51740840429. The next prime is 51740840453. The reversal of 51740840448 is 84404804715.

It is a super-2 number, since 2×51740840448² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13227613 + ... + 13231523.

Almost surely, 2^51740840448 is an apocalyptic number.

51740840448 is a gapful number since it is divisible by the number (58) 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 51740840448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87163037280).

51740840448 is an abundant number, since it is smaller than the sum of its proper divisors (122585234112).

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

51740840448 is a wasteful number, since it uses less digits than its factorization.

51740840448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 51740840448 in words is "fifty-one billion, seven hundred forty million, eight hundred forty thousand, four hundred forty-eight".