55425347990 has 16 divisors (see below), whose sum is σ = 100193809248. Its totient is φ = 22074987456.

The previous prime is 55425347969. The next prime is 55425348007. The reversal of 55425347990 is 9974352455.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11891522 + ... + 11896181.

It is an arithmetic number, because the mean of its divisors is an integer number (6262113078).

Almost surely, 2^55425347990 is an apocalyptic number.

55425347990 is a deficient number, since it is larger than the sum of its proper divisors (44768461258).

55425347990 is a wasteful number, since it uses less digits than its factorization.

55425347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23787943.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 55425347990 in words is "fifty-five billion, four hundred twenty-five million, three hundred forty-seven thousand, nine hundred ninety".