55651006123 has 4 divisors (see below), whose sum is σ = 55783194208. Its totient is φ = 55518818040.

The previous prime is 55651006121. The next prime is 55651006129. The reversal of 55651006123 is 32160015655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32160015655 = 5 ⋅6432003131.

It is a cyclic number.

It is not a de Polignac number, because 55651006123 - 2¹ = 55651006121 is a prime.

It is a super-2 number, since 2×55651006123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55651006121) 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, 66093411 + ... + 66094252.

It is an arithmetic number, because the mean of its divisors is an integer number (13945798552).

Almost surely, 2^55651006123 is an apocalyptic number.

55651006123 is a deficient number, since it is larger than the sum of its proper divisors (132188085).

55651006123 is a wasteful number, since it uses less digits than its factorization.

55651006123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132188084.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 55651006123 in words is "fifty-five billion, six hundred fifty-one million, six thousand, one hundred twenty-three".