15501242452431 has 8 divisors (see below), whose sum is σ = 20669595310000. Its totient is φ = 10333525614912.

The previous prime is 15501242452429. The next prime is 15501242452433. The reversal of 15501242452431 is 13425424210551.

It is an interprime number because it is at equal distance from previous prime (15501242452429) and next prime (15501242452433).

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

It is not a de Polignac number, because 15501242452431 - 2¹ = 15501242452429 is a prime.

It is a super-2 number, since 2×15501242452431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15501242452431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15501242452433) 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, 158948140 + ... + 159045633.

It is an arithmetic number, because the mean of its divisors is an integer number (2583699413750).

Almost surely, 2^{15501242452431} is an apocalyptic number.

15501242452431 is a deficient number, since it is larger than the sum of its proper divisors (5168352857569).

15501242452431 is a wasteful number, since it uses less digits than its factorization.

15501242452431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318010025.

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 15501242452431 its reverse (13425424210551), we get a palindrome (28926666662982).

It can be divided in two parts, 155012424 and 52431, that added together give a triangular number (155064855 = T₁₇₆₁₀).

The spelling of 15501242452431 in words is "fifteen trillion, five hundred one billion, two hundred forty-two million, four hundred fifty-two thousand, four hundred thirty-one".