15320102445 has 12 divisors (see below), whose sum is σ = 26554844316. Its totient is φ = 8170721280.

The previous prime is 15320102437. The next prime is 15320102489. The reversal of 15320102445 is 54420102351.

15320102445 is a `hidden beast` number, since 15 + 3 + 201 + 0 + 2 + 445 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8793563076 + 6526539369 = 93774^2 + 80787^2 .

It is not a de Polignac number, because 15320102445 - 2³ = 15320102437 is a prime.

It is a super-3 number, since 3×15320102445³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170223316 + ... + 170223405.

It is an arithmetic number, because the mean of its divisors is an integer number (2212903693).

Almost surely, 2^15320102445 is an apocalyptic number.

15320102445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15320102445 is a deficient number, since it is larger than the sum of its proper divisors (11234741871).

15320102445 is a wasteful number, since it uses less digits than its factorization.

15320102445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340446732 (or 340446729 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 15320102445 its reverse (54420102351), we get a palindrome (69740204796).

The spelling of 15320102445 in words is "fifteen billion, three hundred twenty million, one hundred two thousand, four hundred forty-five".