42544320455 has 32 divisors (see below), whose sum is σ = 63314431488. Its totient is φ = 26723548800.

The previous prime is 42544320407. The next prime is 42544320461. The reversal of 42544320455 is 55402344524.

It is not a de Polignac number, because 42544320455 - 2¹⁸ = 42544058311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297281 + ... + 416490.

It is an arithmetic number, because the mean of its divisors is an integer number (1978575984).

Almost surely, 2^42544320455 is an apocalyptic number.

42544320455 is a deficient number, since it is larger than the sum of its proper divisors (20770111033).

42544320455 is a wasteful number, since it uses less digits than its factorization.

42544320455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713927.

The product of its (nonzero) digits is 384000, while the sum is 38.

Adding to 42544320455 its reverse (55402344524), we get a palindrome (97946664979).

The spelling of 42544320455 in words is "forty-two billion, five hundred forty-four million, three hundred twenty thousand, four hundred fifty-five".