51102354450 has 192 divisors, whose sum is σ = 154215629568. Its totient is φ = 10932019200.

The previous prime is 51102354403. The next prime is 51102354463. The reversal of 51102354450 is 5445320115.

It is a super-2 number, since 2×51102354450² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3222942 + ... + 3238758.

It is an arithmetic number, because the mean of its divisors is an integer number (803206404).

Almost surely, 2^51102354450 is an apocalyptic number.

51102354450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51102354450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77107814784).

51102354450 is an abundant number, since it is smaller than the sum of its proper divisors (103113275118).

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

51102354450 is a wasteful number, since it uses less digits than its factorization.

51102354450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16037 (or 16032 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51102354450 its reverse (5445320115), we get a palindrome (56547674565).

The spelling of 51102354450 in words is "fifty-one billion, one hundred two million, three hundred fifty-four thousand, four hundred fifty".