15720401426145 has 16 divisors (see below), whose sum is σ = 27087460919232. Its totient is φ = 7739274548160.

The previous prime is 15720401426137. The next prime is 15720401426159. The reversal of 15720401426145 is 54162410402751.

It is not a de Polignac number, because 15720401426145 - 2³ = 15720401426137 is a prime.

It is a super-2 number, since 2×15720401426145² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15720401426097 and 15720401426106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40308721411 + ... + 40308721800.

It is an arithmetic number, because the mean of its divisors is an integer number (1692966307452).

Almost surely, 2^{15720401426145} is an apocalyptic number.

15720401426145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15720401426145 is a deficient number, since it is larger than the sum of its proper divisors (11367059493087).

15720401426145 is a wasteful number, since it uses less digits than its factorization.

15720401426145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80617443232.

The product of its (nonzero) digits is 268800, while the sum is 42.

Adding to 15720401426145 its reverse (54162410402751), we get a palindrome (69882811828896).

The spelling of 15720401426145 in words is "fifteen trillion, seven hundred twenty billion, four hundred one million, four hundred twenty-six thousand, one hundred forty-five".