9974615555 has 4 divisors (see below), whose sum is σ = 11969538672. Its totient is φ = 7979692440.

The previous prime is 9974615491. The next prime is 9974615591. The reversal of 9974615555 is 5555164799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5555164799 = 199 ⋅27915401.

It is not a de Polignac number, because 9974615555 - 2⁶ = 9974615491 is a prime.

It is a super-3 number, since 3×9974615555³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9974615555.

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, 997461551 + ... + 997461560.

It is an arithmetic number, because the mean of its divisors is an integer number (2992384668).

Almost surely, 2^9974615555 is an apocalyptic number.

9974615555 is a deficient number, since it is larger than the sum of its proper divisors (1994923117).

9974615555 is a wasteful number, since it uses less digits than its factorization.

9974615555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994923116.

The product of its digits is 8505000, while the sum is 56.

The square root of 9974615555 is about 99872.9971263504. The cubic root of 9974615555 is about 2152.6101743862.

The spelling of 9974615555 in words is "nine billion, nine hundred seventy-four million, six hundred fifteen thousand, five hundred fifty-five".