53517215623 has 8 divisors (see below), whose sum is σ = 54092868480. Its totient is φ = 52944601080.

The previous prime is 53517215533. The next prime is 53517215651. The reversal of 53517215623 is 32651271535.

It is a happy number.

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

It is not a de Polignac number, because 53517215623 - 2⁹ = 53517215111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53517215683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724153 + ... + 794626.

It is an arithmetic number, because the mean of its divisors is an integer number (6761608560).

Almost surely, 2^53517215623 is an apocalyptic number.

53517215623 is a deficient number, since it is larger than the sum of its proper divisors (575652857).

53517215623 is a wasteful number, since it uses less digits than its factorization.

53517215623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519157.

The product of its digits is 189000, while the sum is 40.

The spelling of 53517215623 in words is "fifty-three billion, five hundred seventeen million, two hundred fifteen thousand, six hundred twenty-three".