54420623515 has 8 divisors (see below), whose sum is σ = 65308933008. Its totient is φ = 43533708960.

The previous prime is 54420623507. The next prime is 54420623557. The reversal of 54420623515 is 51532602445.

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

It is not a de Polignac number, because 54420623515 - 2³ = 54420623507 is a prime.

It is a super-2 number, since 2×54420623515² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260892 + ... + 420601.

It is an arithmetic number, because the mean of its divisors is an integer number (8163616626).

Almost surely, 2^54420623515 is an apocalyptic number.

54420623515 is a deficient number, since it is larger than the sum of its proper divisors (10888309493).

54420623515 is a wasteful number, since it uses less digits than its factorization.

54420623515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697469.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 54420623515 in words is "fifty-four billion, four hundred twenty million, six hundred twenty-three thousand, five hundred fifteen".