55646321145 has 16 divisors (see below), whose sum is σ = 91205678592. Its totient is φ = 28954183040.

The previous prime is 55646321089. The next prime is 55646321147. The reversal of 55646321145 is 54112364655.

It is not a de Polignac number, because 55646321145 - 2¹² = 55646317049 is a prime.

It is a super-2 number, since 2×55646321145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55646321097 and 55646321106.

It is not an unprimeable number, because it can be changed into a prime (55646321147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45240297 + ... + 45241526.

It is an arithmetic number, because the mean of its divisors is an integer number (5700354912).

Almost surely, 2^55646321145 is an apocalyptic number.

It is an amenable number.

55646321145 is a deficient number, since it is larger than the sum of its proper divisors (35559357447).

55646321145 is a wasteful number, since it uses less digits than its factorization.

55646321145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90481872.

The product of its digits is 432000, while the sum is 42.

The spelling of 55646321145 in words is "fifty-five billion, six hundred forty-six million, three hundred twenty-one thousand, one hundred forty-five".