51620413336654 has 8 divisors (see below), whose sum is σ = 77434103387160. Its totient is φ = 25809045540936.

The previous prime is 51620413336651. The next prime is 51620413336693. The reversal of 51620413336654 is 45663331402615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51620413336654² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51620413336598 and 51620413336607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51620413336651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580508124 + ... + 580597039.

It is an arithmetic number, because the mean of its divisors is an integer number (9679262923395).

Almost surely, 2^{51620413336654} is an apocalyptic number.

51620413336654 is a deficient number, since it is larger than the sum of its proper divisors (25813690050506).

51620413336654 is a wasteful number, since it uses less digits than its factorization.

51620413336654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161127394.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 51620413336654 in words is "fifty-one trillion, six hundred twenty billion, four hundred thirteen million, three hundred thirty-six thousand, six hundred fifty-four".