51101061000 has 128 divisors (see below), whose sum is σ = 173929541760. Its totient is φ = 12388128000.

The previous prime is 51101060987. The next prime is 51101061007. The reversal of 51101061000 is 16010115.

It is a super-2 number, since 2×51101061000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (51101061007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741259 + ... + 807258.

It is an arithmetic number, because the mean of its divisors is an integer number (1358824545).

Almost surely, 2^51101061000 is an apocalyptic number.

51101061000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51101061000 is an abundant number, since it is smaller than the sum of its proper divisors (122828480760).

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

51101061000 is a wasteful number, since it uses less digits than its factorization.

51101061000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548552 (or 1548538 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

Adding to 51101061000 its reverse (16010115), we get a palindrome (51117071115).

The spelling of 51101061000 in words is "fifty-one billion, one hundred one million, sixty-one thousand".