16121622516 has 24 divisors (see below), whose sum is σ = 37646069664. Its totient is φ = 5369738400.

The previous prime is 16121622467. The next prime is 16121622527. The reversal of 16121622516 is 61522612161.

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, 500710 + ... + 531933.

It is an arithmetic number, because the mean of its divisors is an integer number (1568586236).

Almost surely, 2^16121622516 is an apocalyptic number.

It is an amenable number.

16121622516 is an abundant number, since it is smaller than the sum of its proper divisors (21524447148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16121622516 is a wasteful number, since it uses less digits than its factorization.

16121622516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033951 (or 1033949 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The spelling of 16121622516 in words is "sixteen billion, one hundred twenty-one million, six hundred twenty-two thousand, five hundred sixteen".