155576064124421 has 16 divisors (see below), whose sum is σ = 161380653170688. Its totient is φ = 149821688190000.

The previous prime is 155576064124417. The next prime is 155576064124451. The reversal of 155576064124421 is 124421460675551.

It is a cyclic number.

It is not a de Polignac number, because 155576064124421 - 2² = 155576064124417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155576064124451) 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, 481181 + ... + 17646066.

It is an arithmetic number, because the mean of its divisors is an integer number (10086290823168).

Almost surely, 2^{155576064124421} is an apocalyptic number.

It is an amenable number.

155576064124421 is a deficient number, since it is larger than the sum of its proper divisors (5804589046267).

155576064124421 is a wasteful number, since it uses less digits than its factorization.

155576064124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18128632.

The product of its (nonzero) digits is 8064000, while the sum is 53.

The spelling of 155576064124421 in words is "one hundred fifty-five trillion, five hundred seventy-six billion, sixty-four million, one hundred twenty-four thousand, four hundred twenty-one".