65106923220 has 72 divisors (see below), whose sum is σ = 198126190080. Its totient is φ = 17306005440.

The previous prime is 65106923191. The next prime is 65106923293. The reversal of 65106923220 is 2232960156.

65106923220 is a `hidden beast` number, since 6 + 510 + 6 + 92 + 32 + 20 = 666.

It is a super-2 number, since 2×65106923220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525540 + ... + 637499.

It is an arithmetic number, because the mean of its divisors is an integer number (2751752640).

Almost surely, 2^65106923220 is an apocalyptic number.

65106923220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65106923220 is an abundant number, since it is smaller than the sum of its proper divisors (133019266860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65106923220 is a wasteful number, since it uses less digits than its factorization.

65106923220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163365 (or 1163360 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 65106923220 in words is "sixty-five billion, one hundred six million, nine hundred twenty-three thousand, two hundred twenty".