55399058156121 has 8 divisors (see below), whose sum is σ = 73916038304160. Its totient is φ = 36907391722752.

The previous prime is 55399058156089. The next prime is 55399058156131. The reversal of 55399058156121 is 12165185099355.

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

It is not a de Polignac number, because 55399058156121 - 2⁵ = 55399058156089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55399058156131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6328423560 + ... + 6328432313.

It is an arithmetic number, because the mean of its divisors is an integer number (9239504788020).

Almost surely, 2^{55399058156121} is an apocalyptic number.

It is an amenable number.

55399058156121 is a deficient number, since it is larger than the sum of its proper divisors (18516980148039).

55399058156121 is a wasteful number, since it uses less digits than its factorization.

55399058156121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12656857335.

The product of its (nonzero) digits is 14580000, while the sum is 60.

The spelling of 55399058156121 in words is "fifty-five trillion, three hundred ninety-nine billion, fifty-eight million, one hundred fifty-six thousand, one hundred twenty-one".