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20311670510 = 2519106903529
BaseRepresentation
bin10010111010101010…
…110111111011101110
31221102112222202210222
4102322222313323232
5313044241424020
613155301331342
71316225231165
oct227252677356
957375882728
1020311670510
11868345475a
123b2a406b52
131bb9130761
14da98563dc
157dd2d2b25
hex4baab7eee

20311670510 has 16 divisors (see below), whose sum is σ = 38485270800. Its totient is φ = 7697054016.

The previous prime is 20311670503. The next prime is 20311670531. The reversal of 20311670510 is 1507611302.

It is a self number, because there is not a number n which added to its sum of digits gives 20311670510.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53451575 + ... + 53451954.

It is an arithmetic number, because the mean of its divisors is an integer number (2405329425).

Almost surely, 220311670510 is an apocalyptic number.

20311670510 is a deficient number, since it is larger than the sum of its proper divisors (18173600290).

20311670510 is a wasteful number, since it uses less digits than its factorization.

20311670510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106903555.

The product of its (nonzero) digits is 1260, while the sum is 26.

The spelling of 20311670510 in words is "twenty billion, three hundred eleven million, six hundred seventy thousand, five hundred ten".

Divisors: 1 2 5 10 19 38 95 190 106903529 213807058 534517645 1069035290 2031167051 4062334102 10155835255 20311670510