55132235664 has 160 divisors (see below), whose sum is σ = 156571312128. Its totient is φ = 16578432000.

The previous prime is 55132235657. The next prime is 55132235729. The reversal of 55132235664 is 46653223155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44785929 + ... + 44787159.

Almost surely, 2^55132235664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55132235664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78285656064).

55132235664 is an abundant number, since it is smaller than the sum of its proper divisors (101439076464).

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

55132235664 is a wasteful number, since it uses less digits than its factorization.

55132235664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1831 counting only the distinct ones).

The product of its digits is 648000, while the sum is 42.

It can be divided in two parts, 551322 and 35664, that added together give a triangular number (586986 = T₁₀₈₃).

The spelling of 55132235664 in words is "fifty-five billion, one hundred thirty-two million, two hundred thirty-five thousand, six hundred sixty-four".