51154697430 has 288 divisors, whose sum is σ = 144127226880. Its totient is φ = 12571096320.

The previous prime is 51154697413. The next prime is 51154697441. The reversal of 51154697430 is 3479645115.

51154697430 is a `hidden beast` number, since 5 + 1 + 1 + 546 + 9 + 74 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 225350977 + ... + 225351203.

It is an arithmetic number, because the mean of its divisors is an integer number (500441760).

Almost surely, 2^51154697430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51154697430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72063613440).

51154697430 is an abundant number, since it is smaller than the sum of its proper divisors (92972529450).

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

51154697430 is a wasteful number, since it uses less digits than its factorization.

51154697430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 51154697430 in words is "fifty-one billion, one hundred fifty-four million, six hundred ninety-seven thousand, four hundred thirty".