1215114032651 has 4 divisors (see below), whose sum is σ = 1228766999400. Its totient is φ = 1201461065904.

The previous prime is 1215114032599. The next prime is 1215114032687. The reversal of 1215114032651 is 1562304115121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1215114032651 - 2¹⁰ = 1215114031627 is a prime.

It is a super-2 number, since 2×1215114032651² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215114035651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6826483241 + ... + 6826483418.

It is an arithmetic number, because the mean of its divisors is an integer number (307191749850).

Almost surely, 2^{1215114032651} is an apocalyptic number.

1215114032651 is a deficient number, since it is larger than the sum of its proper divisors (13652966749).

1215114032651 is an equidigital number, since it uses as much as digits as its factorization.

1215114032651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652966748.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 1215114032651 its reverse (1562304115121), we get a palindrome (2777418147772).

The spelling of 1215114032651 in words is "one trillion, two hundred fifteen billion, one hundred fourteen million, thirty-two thousand, six hundred fifty-one".