99943073535 has 16 divisors (see below), whose sum is σ = 168325176960. Its totient is φ = 50497552800.

The previous prime is 99943073521. The next prime is 99943073543. The reversal of 99943073535 is 53537034999.

It is not a de Polignac number, because 99943073535 - 2¹⁶ = 99943007999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175338441 + ... + 175339010.

It is an arithmetic number, because the mean of its divisors is an integer number (10520323560).

Almost surely, 2^99943073535 is an apocalyptic number.

99943073535 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99943073535 is a deficient number, since it is larger than the sum of its proper divisors (68382103425).

99943073535 is a wasteful number, since it uses less digits than its factorization.

99943073535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350677478.

The product of its (nonzero) digits is 13778100, while the sum is 57.

The spelling of 99943073535 in words is "ninety-nine billion, nine hundred forty-three million, seventy-three thousand, five hundred thirty-five".