1145537617515 has 8 divisors (see below), whose sum is σ = 1832860188048. Its totient is φ = 610953396000.

The previous prime is 1145537617481. The next prime is 1145537617517. The reversal of 1145537617515 is 5157167355411.

It is a happy number.

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

It is not a de Polignac number, because 1145537617515 - 2¹³ = 1145537609323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145537617517) 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, 38184587236 + ... + 38184587265.

It is an arithmetic number, because the mean of its divisors is an integer number (229107523506).

Almost surely, 2^{1145537617515} is an apocalyptic number.

1145537617515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145537617515 is a deficient number, since it is larger than the sum of its proper divisors (687322570533).

1145537617515 is an equidigital number, since it uses as much as digits as its factorization.

1145537617515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76369174509.

The product of its digits is 2205000, while the sum is 51.

The spelling of 1145537617515 in words is "one trillion, one hundred forty-five billion, five hundred thirty-seven million, six hundred seventeen thousand, five hundred fifteen".