13445515055531 has 8 divisors (see below), whose sum is σ = 14678138670720. Its totient is φ = 12241227615552.

The previous prime is 13445515055447. The next prime is 13445515055537. The reversal of 13445515055531 is 13555051554431.

It is a happy number.

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

It is not a de Polignac number, because 13445515055531 - 2⁴² = 9047468544427 is a prime.

It is a super-2 number, since 2×13445515055531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13445515055537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7084042811 + ... + 7084044708.

It is an arithmetic number, because the mean of its divisors is an integer number (1834767333840).

Almost surely, 2^{13445515055531} is an apocalyptic number.

13445515055531 is a deficient number, since it is larger than the sum of its proper divisors (1232623615189).

13445515055531 is a wasteful number, since it uses less digits than its factorization.

13445515055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14168087605.

The product of its (nonzero) digits is 2250000, while the sum is 47.

The spelling of 13445515055531 in words is "thirteen trillion, four hundred forty-five billion, five hundred fifteen million, fifty-five thousand, five hundred thirty-one".