51020220512344 has 16 divisors (see below), whose sum is σ = 98248397608800. Its totient is φ = 24820647816672.

The previous prime is 51020220512321. The next prime is 51020220512363. The reversal of 51020220512344 is 44321502202015.

It is a happy number.

It is a super-2 number, since 2×51020220512344² (a number of 28 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 in 3 ways as a sum of consecutive naturals, for example, 86182804624 + ... + 86182805215.

It is an arithmetic number, because the mean of its divisors is an integer number (6140524850550).

Almost surely, 2^{51020220512344} is an apocalyptic number.

It is an amenable number.

51020220512344 is a deficient number, since it is larger than the sum of its proper divisors (47228177096456).

51020220512344 is a wasteful number, since it uses less digits than its factorization.

51020220512344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172365609882 (or 172365609878 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 51020220512344 its reverse (44321502202015), we get a palindrome (95341722714359).

The spelling of 51020220512344 in words is "fifty-one trillion, twenty billion, two hundred twenty million, five hundred twelve thousand, three hundred forty-four".