2516121542189 has 8 divisors (see below), whose sum is σ = 2536800215040. Its totient is φ = 2495526759216.

The previous prime is 2516121542183. The next prime is 2516121542279. The reversal of 2516121542189 is 9812451216152.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2516121542189 - 2¹² = 2516121538093 is a prime.

It is a super-4 number, since 4×2516121542189⁴ (a number of 51 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516121542183) 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, 20912237 + ... + 21032210.

It is an arithmetic number, because the mean of its divisors is an integer number (317100026880).

Almost surely, 2^{2516121542189} is an apocalyptic number.

It is an amenable number.

2516121542189 is a deficient number, since it is larger than the sum of its proper divisors (20678672851).

2516121542189 is a wasteful number, since it uses less digits than its factorization.

2516121542189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41944939.

The product of its digits is 345600, while the sum is 47.

The spelling of 2516121542189 in words is "two trillion, five hundred sixteen billion, one hundred twenty-one million, five hundred forty-two thousand, one hundred eighty-nine".