15151120631 has 2 divisors, whose sum is σ = 15151120632. Its totient is φ = 15151120630.

The previous prime is 15151120609. The next prime is 15151120667. The reversal of 15151120631 is 13602115151.

It is a weak prime.

It is an emirp because it is prime and its reverse (13602115151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15151120631 is a prime.

It is a super-2 number, since 2×15151120631² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15151120631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15151120531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575560315 + 7575560316.

It is an arithmetic number, because the mean of its divisors is an integer number (7575560316).

Almost surely, 2^15151120631 is an apocalyptic number.

15151120631 is a deficient number, since it is larger than the sum of its proper divisors (1).

15151120631 is an equidigital number, since it uses as much as digits as its factorization.

15151120631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 15151120631 its reverse (13602115151), we get a palindrome (28753235782).

The spelling of 15151120631 in words is "fifteen billion, one hundred fifty-one million, one hundred twenty thousand, six hundred thirty-one".