9979195545 has 160 divisors (see below), whose sum is σ = 20189119104. Its totient is φ = 4673894400.

The previous prime is 9979195543. The next prime is 9979195547. The reversal of 9979195545 is 5455919799.

9979195545 is a `hidden beast` number, since 9 + 9 + 79 + 1 + 9 + 554 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (9979195543) and next prime (9979195547).

It is not a de Polignac number, because 9979195545 - 2¹ = 9979195543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9979195543) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 21646615 + ... + 21647075.

Almost surely, 2^9979195545 is an apocalyptic number.

It is an amenable number.

9979195545 is an abundant number, since it is smaller than the sum of its proper divisors (10209923559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9979195545 is a wasteful number, since it uses less digits than its factorization.

9979195545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 636 counting only the distinct ones).

The product of its digits is 22963500, while the sum is 63.

The square root of 9979195545 is about 99895.9235654789. The cubic root of 9979195545 is about 2152.9395914097.

The spelling of 9979195545 in words is "nine billion, nine hundred seventy-nine million, one hundred ninety-five thousand, five hundred forty-five".