55651005993 has 16 divisors (see below), whose sum is σ = 82474220736. Its totient is φ = 33091506240.

The previous prime is 55651005937. The next prime is 55651006001. The reversal of 55651005993 is 39950015655.

It is not a de Polignac number, because 55651005993 - 2⁸ = 55651005737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55651005923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15907630 + ... + 15911127.

It is an arithmetic number, because the mean of its divisors is an integer number (5154638796).

Almost surely, 2^55651005993 is an apocalyptic number.

55651005993 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55651005993 is a deficient number, since it is larger than the sum of its proper divisors (26823214743).

55651005993 is a wasteful number, since it uses less digits than its factorization.

55651005993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31818824.

The product of its (nonzero) digits is 911250, while the sum is 48.

The spelling of 55651005993 in words is "fifty-five billion, six hundred fifty-one million, five thousand, nine hundred ninety-three".