51437073792 has 128 divisors (see below), whose sum is σ = 147715918560. Its totient is φ = 15764815872.

The previous prime is 51437073769. The next prime is 51437073797. The reversal of 51437073792 is 29737073415.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51437073797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1262898 + ... + 1302990.

Almost surely, 2^51437073792 is an apocalyptic number.

51437073792 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 51437073792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73857959280).

51437073792 is an abundant number, since it is smaller than the sum of its proper divisors (96278844768).

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

51437073792 is a wasteful number, since it uses less digits than its factorization.

51437073792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40380 (or 40368 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 48.

The spelling of 51437073792 in words is "fifty-one billion, four hundred thirty-seven million, seventy-three thousand, seven hundred ninety-two".