55167421765 has 8 divisors (see below), whose sum is σ = 69079206528. Its totient is φ = 42215070480.

The previous prime is 55167421753. The next prime is 55167421783. The reversal of 55167421765 is 56712476155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55167421765 - 2¹³ = 55167413573 is a prime.

It is a Duffinian 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, 239858241 + ... + 239858470.

It is an arithmetic number, because the mean of its divisors is an integer number (8634900816).

Almost surely, 2^55167421765 is an apocalyptic number.

It is an amenable number.

55167421765 is a deficient number, since it is larger than the sum of its proper divisors (13911784763).

55167421765 is a wasteful number, since it uses less digits than its factorization.

55167421765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479716739.

The product of its digits is 1764000, while the sum is 49.

The spelling of 55167421765 in words is "fifty-five billion, one hundred sixty-seven million, four hundred twenty-one thousand, seven hundred sixty-five".