51100378652 has 6 divisors (see below), whose sum is σ = 89425662648. Its totient is φ = 25550189324.

The previous prime is 51100378621. The next prime is 51100378669. The reversal of 51100378652 is 25687300115.

It is a super-2 number, since 2×51100378652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387547328 + ... + 6387547335.

It is an arithmetic number, because the mean of its divisors is an integer number (14904277108).

Almost surely, 2^51100378652 is an apocalyptic number.

It is an amenable number.

51100378652 is a deficient number, since it is larger than the sum of its proper divisors (38325283996).

51100378652 is a wasteful number, since it uses less digits than its factorization.

51100378652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775094667 (or 12775094665 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 51100378652 its reverse (25687300115), we get a palindrome (76787678767).

The spelling of 51100378652 in words is "fifty-one billion, one hundred million, three hundred seventy-eight thousand, six hundred fifty-two".