55405662340 has 48 divisors (see below), whose sum is σ = 133011027072. Its totient is φ = 18990878976.

The previous prime is 55405662331. The next prime is 55405662359. The reversal of 55405662340 is 4326650455.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55405662293 and 55405662302.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 460347 + ... + 568093.

It is an arithmetic number, because the mean of its divisors is an integer number (2771063064).

Almost surely, 2^55405662340 is an apocalyptic number.

It is an amenable number.

55405662340 is an abundant number, since it is smaller than the sum of its proper divisors (77605364732).

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

55405662340 is a wasteful number, since it uses less digits than its factorization.

55405662340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111436 (or 111434 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 55405662340 in words is "fifty-five billion, four hundred five million, six hundred sixty-two thousand, three hundred forty".