15120011601 has 12 divisors (see below), whose sum is σ = 21841322880. Its totient is φ = 10079404920.

The previous prime is 15120011593. The next prime is 15120011609. The reversal of 15120011601 is 10611002151.

It is a happy number.

15120011601 is a `hidden beast` number, since 1 + 51 + 2 + 0 + 0 + 11 + 601 = 666.

It is an interprime number because it is at equal distance from previous prime (15120011593) and next prime (15120011609).

It is not a de Polignac number, because 15120011601 - 2³ = 15120011593 is a prime.

It is a super-2 number, since 2×15120011601² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15120011609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151080 + ... + 230358.

It is an arithmetic number, because the mean of its divisors is an integer number (1820110240).

Almost surely, 2^15120011601 is an apocalyptic number.

It is an amenable number.

15120011601 is a deficient number, since it is larger than the sum of its proper divisors (6721311279).

15120011601 is a wasteful number, since it uses less digits than its factorization.

15120011601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100476 (or 100473 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 15120011601 its reverse (10611002151), we get a palindrome (25731013752).

The spelling of 15120011601 in words is "fifteen billion, one hundred twenty million, eleven thousand, six hundred one".