55144135340 has 48 divisors (see below), whose sum is σ = 132860976192. Its totient is φ = 18832982016.

The previous prime is 55144135337. The next prime is 55144135363. The reversal of 55144135340 is 4353144155.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 55144135340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730337 + ... + 802296.

It is an arithmetic number, because the mean of its divisors is an integer number (2767937004).

Almost surely, 2^55144135340 is an apocalyptic number.

It is an amenable number.

55144135340 is an abundant number, since it is smaller than the sum of its proper divisors (77716840852).

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

55144135340 is a wasteful number, since it uses less digits than its factorization.

55144135340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532906 (or 1532904 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 55144135340 its reverse (4353144155), we get a palindrome (59497279495).

The spelling of 55144135340 in words is "fifty-five billion, one hundred forty-four million, one hundred thirty-five thousand, three hundred forty".