15071005081 has 6 divisors (see below), whose sum is σ = 16565650346. Its totient is φ = 13700913600.

The previous prime is 15071005073. The next prime is 15071005109. The reversal of 15071005081 is 18050017051.

It can be written as a sum of positive squares in only one way, i.e., 14959491481 + 111513600 = 122309^2 + 10560^2 .

It is not a de Polignac number, because 15071005081 - 2³ = 15071005073 is a prime.

It is a super-2 number, since 2×15071005081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15071002081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62276760 + ... + 62277001.

Almost surely, 2^15071005081 is an apocalyptic number.

15071005081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15071005081 is a deficient number, since it is larger than the sum of its proper divisors (1494645265).

15071005081 is a wasteful number, since it uses less digits than its factorization.

15071005081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124553783 (or 124553772 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 28.

The spelling of 15071005081 in words is "fifteen billion, seventy-one million, five thousand, eighty-one".