90780600365 has 64 divisors (see below), whose sum is σ = 141866457600. Its totient is φ = 54153805824.

The previous prime is 90780600347. The next prime is 90780600373. The reversal of 90780600365 is 56300608709.

It is a cyclic number.

It is not a de Polignac number, because 90780600365 - 2¹⁴ = 90780583981 is a prime.

It is a super-2 number, since 2×90780600365² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1641281 + ... + 1695689.

It is an arithmetic number, because the mean of its divisors is an integer number (2216663400).

Almost surely, 2^90780600365 is an apocalyptic number.

90780600365 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90780600365 is a deficient number, since it is larger than the sum of its proper divisors (51085857235).

90780600365 is a wasteful number, since it uses less digits than its factorization.

90780600365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54646.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 90780600365 in words is "ninety billion, seven hundred eighty million, six hundred thousand, three hundred sixty-five".