15537738670145 has 8 divisors (see below), whose sum is σ = 18673579710720. Its totient is φ = 12411328731760.

The previous prime is 15537738670141. The next prime is 15537738670171. The reversal of 15537738670145 is 54107683773551.

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

It is not a de Polignac number, because 15537738670145 - 2² = 15537738670141 is a prime.

It is a super-2 number, since 2×15537738670145² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15537738670141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357771921 + ... + 2357778510.

It is an arithmetic number, because the mean of its divisors is an integer number (2334197463840).

Almost surely, 2^{15537738670145} is an apocalyptic number.

It is an amenable number.

15537738670145 is a deficient number, since it is larger than the sum of its proper divisors (3135841040575).

15537738670145 is an equidigital number, since it uses as much as digits as its factorization.

15537738670145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715551095.

The product of its (nonzero) digits is 74088000, while the sum is 62.

The spelling of 15537738670145 in words is "fifteen trillion, five hundred thirty-seven billion, seven hundred thirty-eight million, six hundred seventy thousand, one hundred forty-five".