55493149512 has 16 divisors (see below), whose sum is σ = 138732873840. Its totient is φ = 18497716496.

The previous prime is 55493149511. The next prime is 55493149519. The reversal of 55493149512 is 21594139455.

It is a super-2 number, since 2×55493149512² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55493149511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156107258 + ... + 1156107305.

It is an arithmetic number, because the mean of its divisors is an integer number (8670804615).

Almost surely, 2^55493149512 is an apocalyptic number.

It is an amenable number.

55493149512 is an abundant number, since it is smaller than the sum of its proper divisors (83239724328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55493149512 is a wasteful number, since it uses less digits than its factorization.

55493149512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312214572 (or 2312214568 counting only the distinct ones).

The product of its digits is 972000, while the sum is 48.

The spelling of 55493149512 in words is "fifty-five billion, four hundred ninety-three million, one hundred forty-nine thousand, five hundred twelve".