53215421432015 has 32 divisors (see below), whose sum is σ = 66669362067456. Its totient is φ = 40700349043200.

The previous prime is 53215421432003. The next prime is 53215421432027. The reversal of 53215421432015 is 51023412451235.

It is an interprime number because it is at equal distance from previous prime (53215421432003) and next prime (53215421432027).

It is not a de Polignac number, because 53215421432015 - 2⁴ = 53215421431999 is a prime.

It is a super-2 number, since 2×53215421432015² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53215421432015.

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, 3956236040 + ... + 3956249490.

It is an arithmetic number, because the mean of its divisors is an integer number (2083417564608).

Almost surely, 2^{53215421432015} is an apocalyptic number.

53215421432015 is a deficient number, since it is larger than the sum of its proper divisors (13453940635441).

53215421432015 is a wasteful number, since it uses less digits than its factorization.

53215421432015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28679.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 53215421432015 in words is "fifty-three trillion, two hundred fifteen billion, four hundred twenty-one million, four hundred thirty-two thousand, fifteen".