2115152001561 has 8 divisors (see below), whose sum is σ = 2821070169504. Its totient is φ = 1409667584000.

The previous prime is 2115152001527. The next prime is 2115152001631. The reversal of 2115152001561 is 1651002515112.

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 2115152001561 - 2⁶ = 2115152001497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115152001161) 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, 108426216 + ... + 108445721.

It is an arithmetic number, because the mean of its divisors is an integer number (352633771188).

Almost surely, 2^{2115152001561} is an apocalyptic number.

It is an amenable number.

2115152001561 is a deficient number, since it is larger than the sum of its proper divisors (705918167943).

2115152001561 is a wasteful number, since it uses less digits than its factorization.

2115152001561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216875191.

The product of its (nonzero) digits is 3000, while the sum is 30.

Adding to 2115152001561 its reverse (1651002515112), we get a palindrome (3766154516673).

The spelling of 2115152001561 in words is "two trillion, one hundred fifteen billion, one hundred fifty-two million, one thousand, five hundred sixty-one".