2151621167016 has 64 divisors (see below), whose sum is σ = 5630857902720. Its totient is φ = 683832314880.

The previous prime is 2151621167011. The next prime is 2151621167083. The reversal of 2151621167016 is 6107611261512.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2151621167011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6053845 + ... + 6399396.

It is an arithmetic number, because the mean of its divisors is an integer number (87982154730).

Almost surely, 2^{2151621167016} is an apocalyptic number.

It is an amenable number.

2151621167016 is an abundant number, since it is smaller than the sum of its proper divisors (3479236735704).

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

2151621167016 is a wasteful number, since it uses less digits than its factorization.

2151621167016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12453586 (or 12453582 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 2151621167016 in words is "two trillion, one hundred fifty-one billion, six hundred twenty-one million, one hundred sixty-seven thousand, sixteen".