99530779455 has 192 divisors, whose sum is σ = 191022354432. Its totient is φ = 49638251520.

The previous prime is 99530779367. The next prime is 99530779459. The reversal of 99530779455 is 55497703599.

99530779455 is a `hidden beast` number, since 9 + 9 + 530 + 7 + 7 + 94 + 5 + 5 = 666.

It is not a de Polignac number, because 99530779455 - 2¹⁴ = 99530763071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99530779392 and 99530779401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99530779459) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 145725544 + ... + 145726226.

It is an arithmetic number, because the mean of its divisors is an integer number (994908096).

Almost surely, 2^99530779455 is an apocalyptic number.

99530779455 is a deficient number, since it is larger than the sum of its proper divisors (91491574977).

99530779455 is a wasteful number, since it uses less digits than its factorization.

99530779455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 53581500, while the sum is 63.

The spelling of 99530779455 in words is "ninety-nine billion, five hundred thirty million, seven hundred seventy-nine thousand, four hundred fifty-five".