15420436516 has 12 divisors (see below), whose sum is σ = 27856272640. Its totient is φ = 7461501480.

The previous prime is 15420436511. The next prime is 15420436519. The reversal of 15420436516 is 61563402451.

It is not an unprimeable number, because it can be changed into a prime (15420436511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62179056 + ... + 62179303.

Almost surely, 2^15420436516 is an apocalyptic number.

It is an amenable number.

15420436516 is a deficient number, since it is larger than the sum of its proper divisors (12435836124).

15420436516 is a wasteful number, since it uses less digits than its factorization.

15420436516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124358394 (or 124358392 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 15420436516 its reverse (61563402451), we get a palindrome (76983838967).

The spelling of 15420436516 in words is "fifteen billion, four hundred twenty million, four hundred thirty-six thousand, five hundred sixteen".