15497534516 has 6 divisors (see below), whose sum is σ = 27120685410. Its totient is φ = 7748767256.

The previous prime is 15497534501. The next prime is 15497534579. The reversal of 15497534516 is 61543579451.

It can be written as a sum of positive squares in only one way, i.e., 15234964900 + 262569616 = 123430^2 + 16204^2 .

It is a super-2 number, since 2×15497534516² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937191811 + ... + 1937191818.

It is an arithmetic number, because the mean of its divisors is an integer number (4520114235).

Almost surely, 2^15497534516 is an apocalyptic number.

It is an amenable number.

15497534516 is a deficient number, since it is larger than the sum of its proper divisors (11623150894).

15497534516 is a wasteful number, since it uses less digits than its factorization.

15497534516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874383633 (or 3874383631 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 50.

The spelling of 15497534516 in words is "fifteen billion, four hundred ninety-seven million, five hundred thirty-four thousand, five hundred sixteen".