5551646726465 has 24 divisors (see below), whose sum is σ = 7858795597632. Its totient is φ = 3753225944160.

The previous prime is 5551646726429. The next prime is 5551646726519. The reversal of 5551646726465 is 5646276461555.

It is not a de Polignac number, because 5551646726465 - 2³⁰ = 5550572984641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5551646726398 and 5551646726407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159558539 + ... + 159593328.

It is an arithmetic number, because the mean of its divisors is an integer number (327449816568).

Almost surely, 2^{5551646726465} is an apocalyptic number.

It is an amenable number.

5551646726465 is a deficient number, since it is larger than the sum of its proper divisors (2307148871167).

5551646726465 is a wasteful number, since it uses less digits than its factorization.

5551646726465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319151957 (or 319151950 counting only the distinct ones).

The product of its digits is 181440000, while the sum is 62.

The spelling of 5551646726465 in words is "five trillion, five hundred fifty-one billion, six hundred forty-six million, seven hundred twenty-six thousand, four hundred sixty-five".