90533540690 has 32 divisors (see below), whose sum is σ = 164610883584. Its totient is φ = 35846798400.

The previous prime is 90533540683. The next prime is 90533540711. The reversal of 90533540690 is 9604533509.

It is a super-2 number, since 2×90533540690² (a number of 23 digits) contains 22 as substring.

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, 6666287 + ... + 6679853.

It is an arithmetic number, because the mean of its divisors is an integer number (5144090112).

Almost surely, 2^90533540690 is an apocalyptic number.

90533540690 is a deficient number, since it is larger than the sum of its proper divisors (74077342894).

90533540690 is a wasteful number, since it uses less digits than its factorization.

90533540690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20282.

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 90533540690 in words is "ninety billion, five hundred thirty-three million, five hundred forty thousand, six hundred ninety".