15155755487 has 4 divisors (see below), whose sum is σ = 15211681056. Its totient is φ = 15099829920.

The previous prime is 15155755469. The next prime is 15155755523. The reversal of 15155755487 is 78455755151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78455755151 = 53 ⋅1480297267.

It is a cyclic number.

It is not a de Polignac number, because 15155755487 - 2⁶ = 15155755423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15155755457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27962378 + ... + 27962919.

It is an arithmetic number, because the mean of its divisors is an integer number (3802920264).

Almost surely, 2^15155755487 is an apocalyptic number.

15155755487 is a deficient number, since it is larger than the sum of its proper divisors (55925569).

15155755487 is an equidigital number, since it uses as much as digits as its factorization.

15155755487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55925568.

The product of its digits is 4900000, while the sum is 53.

The spelling of 15155755487 in words is "fifteen billion, one hundred fifty-five million, seven hundred fifty-five thousand, four hundred eighty-seven".