73291992085 has 16 divisors (see below), whose sum is σ = 94727954160. Its totient is φ = 54116375040.

The previous prime is 73291992077. The next prime is 73291992091. The reversal of 73291992085 is 58029919237.

It can be written as a sum of positive squares in 8 ways, for example, as 3599160049 + 69692832036 = 59993^2 + 263994^2 .

It is not a de Polignac number, because 73291992085 - 2³ = 73291992077 is a prime.

It is a super-2 number, since 2×73291992085² (a number of 23 digits) contains 22 as substring.

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, 469305 + ... + 605665.

It is an arithmetic number, because the mean of its divisors is an integer number (5920497135).

Almost surely, 2^73291992085 is an apocalyptic number.

It is an amenable number.

73291992085 is a deficient number, since it is larger than the sum of its proper divisors (21435962075).

73291992085 is a wasteful number, since it uses less digits than its factorization.

73291992085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144648.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 73291992085 in words is "seventy-three billion, two hundred ninety-one million, nine hundred ninety-two thousand, eighty-five".