55134704640 has 352 divisors, whose sum is σ = 196563093120. Its totient is φ = 13108248576.

The previous prime is 55134704617. The next prime is 55134704663. The reversal of 55134704640 is 4640743155.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55134704617) and next prime (55134704663).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4955724 + ... + 4966836.

Almost surely, 2^55134704640 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 55134704640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98281546560).

55134704640 is an abundant number, since it is smaller than the sum of its proper divisors (141428388480).

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

55134704640 is a wasteful number, since it uses less digits than its factorization.

55134704640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11177 (or 11159 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 55134704640 in words is "fifty-five billion, one hundred thirty-four million, seven hundred four thousand, six hundred forty".