55506649540 has 12 divisors (see below), whose sum is σ = 116563964076. Its totient is φ = 22202659808.

The previous prime is 55506649537. The next prime is 55506649577. The reversal of 55506649540 is 4594660555.

It can be written as a sum of positive squares in 2 ways, for example, as 6041331076 + 49465318464 = 77726^2 + 222408^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387666219 + ... + 1387666258.

It is an arithmetic number, because the mean of its divisors is an integer number (9713663673).

Almost surely, 2^55506649540 is an apocalyptic number.

It is an amenable number.

55506649540 is an abundant number, since it is smaller than the sum of its proper divisors (61057314536).

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

55506649540 is a wasteful number, since it uses less digits than its factorization.

55506649540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775332486 (or 2775332484 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 55506649540 in words is "fifty-five billion, five hundred six million, six hundred forty-nine thousand, five hundred forty".