415551323987 has 4 divisors (see below), whose sum is σ = 433618772880. Its totient is φ = 397483875096.

The previous prime is 415551323969. The next prime is 415551324011. The reversal of 415551323987 is 789323155514.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 415551323987 - 2¹² = 415551319891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415551323917) 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, 9033724412 + ... + 9033724457.

It is an arithmetic number, because the mean of its divisors is an integer number (108404693220).

Almost surely, 2^415551323987 is an apocalyptic number.

415551323987 is a deficient number, since it is larger than the sum of its proper divisors (18067448893).

415551323987 is a wasteful number, since it uses less digits than its factorization.

415551323987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18067448892.

The product of its digits is 4536000, while the sum is 53.

The spelling of 415551323987 in words is "four hundred fifteen billion, five hundred fifty-one million, three hundred twenty-three thousand, nine hundred eighty-seven".