15198515651 has 6 divisors (see below), whose sum is σ = 16580644956. Its totient is φ = 13816460700.

The previous prime is 15198515609. The next prime is 15198515677. The reversal of 15198515651 is 15651589151.

It is not a de Polignac number, because 15198515651 - 2¹⁸ = 15198253507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15198515596 and 15198515605.

It is not an unprimeable number, because it can be changed into a prime (15198515051) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 390296 + ... + 427466.

It is an arithmetic number, because the mean of its divisors is an integer number (2763440826).

Almost surely, 2^15198515651 is an apocalyptic number.

15198515651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15198515651 is a deficient number, since it is larger than the sum of its proper divisors (1382129305).

15198515651 is an frugal number, since it uses more digits than its factorization.

15198515651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74353 (or 37182 counting only the distinct ones).

The product of its digits is 270000, while the sum is 47.

The spelling of 15198515651 in words is "fifteen billion, one hundred ninety-eight million, five hundred fifteen thousand, six hundred fifty-one".