51011051052 has 96 divisors (see below), whose sum is σ = 129281295808. Its totient is φ = 15561621504.

The previous prime is 51011050999. The next prime is 51011051099. The reversal of 51011051052 is 25015011015.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9421098 + ... + 9426510.

Almost surely, 2^51011051052 is an apocalyptic number.

51011051052 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 51011051052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64640647904).

51011051052 is an abundant number, since it is smaller than the sum of its proper divisors (78270244756).

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

51011051052 is a wasteful number, since it uses less digits than its factorization.

51011051052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939 (or 5937 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

Adding to 51011051052 its reverse (25015011015), we get a palindrome (76026062067).

The spelling of 51011051052 in words is "fifty-one billion, eleven million, fifty-one thousand, fifty-two".