15420132514 has 8 divisors (see below), whose sum is σ = 23134261788. Its totient is φ = 7708711920.

The previous prime is 15420132451. The next prime is 15420132521. The reversal of 15420132514 is 41523102451.

It can be written as a sum of positive squares in 2 ways, for example, as 15345015625 + 75116889 = 123875^2 + 8667^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662877 + ... + 685744.

Almost surely, 2^15420132514 is an apocalyptic number.

15420132514 is a deficient number, since it is larger than the sum of its proper divisors (7714129274).

15420132514 is a wasteful number, since it uses less digits than its factorization.

15420132514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354340.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 15420132514 its reverse (41523102451), we get a palindrome (56943234965).

The spelling of 15420132514 in words is "fifteen billion, four hundred twenty million, one hundred thirty-two thousand, five hundred fourteen".