55215240063454 has 4 divisors (see below), whose sum is σ = 82822860095184. Its totient is φ = 27607620031726.

The previous prime is 55215240063413. The next prime is 55215240063479. The reversal of 55215240063454 is 45436004251255.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13803810015862 + ... + 13803810015865.

It is an arithmetic number, because the mean of its divisors is an integer number (20705715023796).

Almost surely, 2^{55215240063454} is an apocalyptic number.

55215240063454 is a deficient number, since it is larger than the sum of its proper divisors (27607620031730).

55215240063454 is a wasteful number, since it uses less digits than its factorization.

55215240063454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27607620031729.

The product of its (nonzero) digits is 2880000, while the sum is 46.

The spelling of 55215240063454 in words is "fifty-five trillion, two hundred fifteen billion, two hundred forty million, sixty-three thousand, four hundred fifty-four".